Weakness (CWE)
CWE-863: Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
How to prevent it (5 mitigations)
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Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries.
Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
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Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
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Architecture and Design
For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page.
One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
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System Configuration, Installation
Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
Source: MITRE CWE-863
4,308 results · Feed
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Medium 5.3
Parse Server: Session update endpoint allows overwriting server-generated session fields
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.57 and 9.6.0-alpha.48, an authenticated user can overwrite server-generated session fields such as expiresAt and createdWith when upd…
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High 7.1
Parse Server: LiveQuery bypasses CLP pointer permission enforcement
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.53 and 9.6.0-alpha.42, Parse Server's LiveQuery WebSocket interface does not enforce Class-Level Permission (CLP) pointer permissions…
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Medium 6.5
Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, when the Vikunja API returns tasks, it populates the `related_tasks` field with full task objects for all related tasks without checking whether the requesting user has re…
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High 7.1
Vikunja Allows Disabled/Locked User Accounts to Authenticate via API Tokens, CalDAV, and OpenID Connect
Vikunja is an open-source self-hosted task management platform. Starting in version 0.18.0 and prior to version 2.2.1, when a user account is disabled or locked, the status check is only enforced on the local login and JWT token refresh paths. Three other aut…
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High 8.1
Vikunja’s Improper Access Control Enables Bypass of Administrator-Imposed Account Disablement
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, a flaw in Vikunja’s password reset logic allows disabled users to regain access to their accounts. The `ResetPassword()` function sets the user’s status to `StatusActive` …
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Medium 5.4CVE-2026-28755 Public exploit
NGINX ngx_stream_ssl_module vulnerability
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_stream_ssl_module module due to the improper handling of revoked certificates when configured with the ssl_verify_client on and ssl_ocsp on directives, allowing the TLS handshake to succeed even…
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Low 2.3
Apache Artemis, Apache ActiveMQ Artemis: Temporary address auto-created for OpenWire consumer without createAddress permission
Incorrect Authorization (CWE-863) vulnerability in Apache Artemis, Apache ActiveMQ Artemis exists when an application using the OpenWire protocol attempts to create a non-durable JMS topic subscription on an address that doesn't exist with an authenticated us…
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High 8.8
Galaxy Software Services｜Vitals ESP - Incorrect Authorization
Vitals ESP developed by Galaxy Software Services has a Incorrect Authorization vulnerability, allowing authenticated remote attackers to perform certain administrative functions, thereby escalating privileges.
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Medium 6.1
OpenClaw < 2026.3.7 - Sandbox Escape via /acp spawn Command
OpenClaw versions prior to 2026.3.7 contain a sandbox escape vulnerability in the /acp spawn command that allows authorized sandboxed sessions to initialize host-side ACP runtime. Attackers can bypass sandbox restrictions by invoking the /acp spawn slash-comm…
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Medium 5.3
OpenClaw < 2026.3.7 - Shell Approval Gating Bypass via Dispatch Wrapper Depth Mismatch
OpenClaw versions prior to 2026.3.7 contain a shell approval gating bypass vulnerability in system.run dispatch-wrapper handling that allows attackers to skip shell wrapper approval requirements. The approval classifier and execution planner apply different d…
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High 7.6
AVideo's Video Moderator Privilege Escalation via Ownership Transfer Enables Arbitrary Video Deletion
WWBN AVideo is an open source video platform. In versions up to and including 26.0, a user with the "Videos Moderator" permission can escalate privileges to perform full video management operations — including ownership transfer and deletion of any video — de…
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Medium 4.3
OpenClaw < 2026.2.25 - Sender Policy Bypass in Slack Reaction and Pin Event Handlers
OpenClaw versions prior to 2026.2.25 fail to consistently apply sender-policy checks to reaction_* and pin_* non-message events before adding them to system-event context. Attackers can bypass configured DM policies and channel user allowlists to inject unaut…
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Medium 5.4
OpenClaw < 2026.2.23 - ACP Permission Auto-Approval Bypass via Untrusted Tool Metadata
OpenClaw versions prior to 2026.2.23 contain an authorization bypass vulnerability in the ACP client that auto-approves tool calls based on untrusted toolCall.kind metadata and permissive name heuristics. Attackers can bypass interactive approval prompts for …
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Medium 5.4
OpenClaw < 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers
OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending sys…
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Medium 4.8
OpenClaw < 2026.2.25 - Approval Identity Mismatch in system.run Command Execution
OpenClaw versions prior to 2026.2.25 contain an approval-integrity bypass vulnerability in system.run where rendered command text is used as approval identity while trimming argv token whitespace, but runtime execution uses raw argv. An attacker can craft a t…
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Low 3.7
OpenClaw < 2026.2.26 - Cross-Account Authorization Bypass in DM Pairing Store
OpenClaw versions prior to 2026.2.26 contain an authorization bypass vulnerability in the pairing-store access control for direct message pairing policy that allows attackers to reuse pairing approvals across multiple accounts. An attacker approved as a sende…
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Low 2.6
OpenClaw < 2026.2.26 - Approval Context-Binding Weakness in system.run via host=node
OpenClaw versions prior to 2026.2.26 contain an approval context-binding weakness in system.run execution flows with host=node that allows reuse of previously approved requests with modified environment variables. Attackers with access to an approval id can e…
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Medium 6.5
OpenClaw < 2026.2.23 - Twilio Webhook Replay Bypass via Randomized Event ID Normalization
OpenClaw versions prior to 2026.2.23 contain a vulnerability in Twilio webhook event deduplication where normalized event IDs are randomized per parse, allowing replay events to bypass manager dedupe checks. Attackers can replay Twilio webhook events to trigg…
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Medium 6.4
OpenClaw < 2026.2.24 - Hidden Command Execution via Shell-Wrapper Positional argv Carriers
OpenClaw versions prior to 2026.2.24 contain a command injection vulnerability in the system.run shell-wrapper that allows attackers to execute hidden commands by injecting positional argv carriers after inline shell payloads. Attackers can craft misleading a…
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High 8.8
OpenClaw < 2026.3.1 - Authorization Bypass in Agent Runs via Owner-Only Tool Access
OpenClaw versions prior to 2026.3.1 contain an authorization mismatch vulnerability that allows authenticated callers with operator.write scope to invoke owner-only tool surfaces including gateway and cron through agent runs in scoped-token deployments. Attac…
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Low 3.7
OpenClaw < 2026.2.25 - Unauthorized Reaction Status Event Enqueue via Access Check Bypass
OpenClaw versions prior to 2026.2.25 contain an access control vulnerability in signal reaction notification handling that allows unauthorized senders to enqueue status events before authorization checks are applied. Attackers can exploit the reaction-only ev…
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High 8.8
OpenClaw < 2026.2.25 - Privilege Escalation via Unpaired Device Identity in Shared Gateway Authentication
OpenClaw versions 2026.2.22 prior to 2026.2.25 contain a privilege escalation vulnerability allowing unpaired device identities to bypass operator pairing requirements and self-assign elevated operator scopes including operator.admin. Attackers with valid sha…
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Medium 4.9
Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the de…
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Medium 5.9
PM access granted through invites after access revocation
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an attacker can grant access to a private message topic through invites even after they lose access to that PM. Versions 2026.3.0-latest.1, 2026.2.1,…
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Medium 5.1
Discourse user can create Zendesk tickets even when it does not have access to topic
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, moderators can create Zendesk tickets for topics they do not have access to view. This affects all forums that use the Zendesk plugin. Versions 2026.…
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Medium 5.4
Discourse has a Hidden Solved topics permission bypass
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an authorization bypass vulnerability in hidden Solved topics may allow unauthorized users to accept or unaccept solutions. Versions 2026.3.0-latest.…
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Medium 5.3
Read-only Vikunja users can delete project background images via broken object-level authorization
Vikunja is an open-source self-hosted task management platform. Starting in version 0.20.2 and prior to version 2.2.0, the `DELETE /api/v1/projects/:project/background` endpoint checks `CanRead` permission instead of `CanUpdate`, allowing any user with read-o…
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Medium 5.3
ZITADEL is missing enforcement of organization scopes
ZITADEL is an open source identity management platform. Versions prior to 3.4.9 and 4.0.0 through 4.12.2 allowed users to bypass organization enforcement during authentication. Zitadel allows applications to enforce an organzation context during authenticatio…
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Medium 4.6
Egress Policy Bypass via DNS over HTTPS (DoH) in Harden-Runner (Community Tier)
Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. In versions 2.15.1 and below, a DNS over HTTPS (DoH) vulnerability allows attackers to bypass egress-policy: block network restrictions by tunneling exfiltrated data th…
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Medium 4.6
Egress Policy Bypass via DNS over TCP in Harden-Runner (Community Tier)
Harden-Runner is a CI/CD security agent that works like an EDR for GitHub Actions runners. In versions 2.15.1 and below, the Harden-Runner that allows bypass of the egress-policy: block network restriction using DNS queries over TCP. Egress policies are enfor…
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Medium 5.3
Discourse has a poll authorization bypass via post_id array parameter
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an authorization bypass in the poll plugin allowed authenticated users to vote on, remove votes from, or toggle the open/closed status of polls they …
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High 8.2
Heimdall: Path received via Envoy gRPC corrupted when containing query string
Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expr…
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Critical 9.8
SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API
SiYuan is a personal knowledge management system. Versions 3.6.0 and below contain an authorization bypass vulnerability in the /api/search/fullTextSearchBlock endpoint. When the method parameter is set to 2, the endpoint passes user-supplied input directly a…
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Medium 6.5
File Browser has an Authorization Policy Bypass in its Public Share Download Flow
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.0 and below contain a permission enforcement bypass which allows users who are denied download privileges (p…
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Medium 6.5
File Browser has an Access Rule Bypass via Path Traversal in Copy/Rename Destination Parameter
File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Versions 2.61.2 and below are vulnerable to Path Traversal through the resourcePatchHandler (http/resource.go). The destin…
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Medium 5.9
OpenClaw < 2026.2.22 - Sender Authorization Bypass via Identity Collision in toolsBySender
OpenClaw versions prior to 2026.2.22 contain an authorization bypass vulnerability in the toolsBySender group policy matching that allows attackers to inherit elevated tool permissions through identifier collision attacks. Attackers can exploit untyped sender…
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Medium 5.9
OpenClaw < 2026.3.2 - Missing Owner Flag Validation in Discord Voice Transcript Handler
OpenClaw versions prior to 2026.3.2 fail to pass the senderIsOwner flag when processing Discord voice transcripts in agentCommand, causing the flag to default to true. Non-owner voice participants can exploit this omission to access owner-only tools including…
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Medium 5.3
OpenClaw < 2026.2.25 - Missing Authorization Check in Discord DM Reaction Ingress
OpenClaw versions prior to 2026.2.25 fail to enforce dmPolicy and allowFrom authorization checks on Discord direct-message reaction notifications, allowing non-allowlisted users to enqueue reaction-derived system events. Attackers can exploit this inconsisten…
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Medium 6.5
OpenClaw < 2026.2.26 - Improper Authorization via DM Pairing Store Identity Inheritance in Group Allowlist
OpenClaw versions prior to 2026.2.26 contain an authorization bypass vulnerability where DM pairing-store identities are incorrectly eligible for group allowlist authorization checks. Attackers can exploit this cross-context authorization flaw by using a send…
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High 7.1
OpenClaw < 2026.2.24 - Approval Gating Bypass via Dispatch-Wrapper Depth-Cap Mismatch in system.run
OpenClaw versions prior to 2026.2.24 contain an approval gating bypass vulnerability in system.run allowlist mode where nested transparent dispatch wrappers can suppress shell-wrapper detection. Attackers can exploit this by chaining multiple dispatch wrapper…