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
1,462 results · Clear filters · Feed
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High 8.1
Incorrect authorization in Workers in Google Chrome prior to 151.0.7922.173 allowed a remote attacker who had compromis…
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High 8.3
Winter: ImportExportController AJAX handlers bypass granular import/export permission gate
### Impact Affected versions of Winter CMS did not enforce the `ImportExportController` behavior's granular access control on the handlers that actually perform the work. The behavior supports per-operation access control through the `import[permissions]` and…
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High 8.3
Improper Privilege Management through Agent Run History in Splunk AI Toolkit
In Splunk AI Toolkit versions below 6.0.0, a user who does not hold the "admin" or "power" Splunk roles could run searches with system-level privileges, access all relevant data, affect system integrity, and read or delete search jobs belonging to other users…
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High 8.8
Wekan: a low-privilege board member escalates to board admin and takes over a private board via the `sort` collection-allow rule
Wekan is open source kanban built with Meteor. Prior to 9.89, the second Boards.allow({ update }) rule in server/permissions/boards.js called canUpdateBoardSort in server/lib/utils.js, which authorized any board member whenever fieldNames included sort. Becau…
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High 7.9
Power System Incorrect Authorization
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in the interface between the BMC/FSP and the host system. An attacker with service account or root access to the BMC/FSP can acce…
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High 8.7
Akaunting 3.1.21 - Improper authorization in BulkActions handle dispatch
Akaunting 3.1.21 contains an authenticated improper authorization vulnerability in the common BulkActions dispatcher.This issue affects Akaunting: 3.1.21.
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High 8.1
Power System Incorrect Authorization
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, FW950.00 through FW950.H2, OP940.00 through OP940.a1 (Power9), and OP940.00 - OP940.81 (Power HMC) is affected by a vulnerability in the interface between the BMC/…
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High 7.6
Snipe-IT: Tenant Isolation Bypass in FMCS Floater Mode
Snipe-IT is an IT asset/license management system. Prior to 8.6.3, a company-scoped user in FMCS floater mode can access users whose company_id is null because broad API queries and bulk web actions do not consistently apply isCurrentUserHasAccess. The /api/v…
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High 7.1
CVE-2026-17183 CVE Record
An authenticated user with permission to create or edit alert rules can bypass datasource query authorization by marking an alert rule query as a server-side expression while referencing a real datasource UID (incorrect authorization). This can expose data ac…
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High 7.2
Flow-Like: Azure invoke presign grants app content write SAS to ExecuteEvents-only users
Flow-Like is a platform for building end-to-end use cases. Prior to version 1.0.4, `GET /api/v1/apps/{app_id}/invoke/presign` grants Azure Blob Storage SAS credentials with write and delete access to app content to any app member that has `ExecuteEvents`, eve…
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High 8.2
Wazuh: Privilege Escalation via Admin-Protection Bypass in update-user API Endpoint
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.9.0 until 4.10.4 and 4.14.6, PUT /security/users/{user_id} in api/api/controllers/security_controller.py passes request.get("user") instead of request.context…
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High 7.7
Wazuh Manager dapi RBAC Bypass Allows Privilege Escalation
Wazuh is a free and open source platform used for threat prevention, detection, and response. From 4.0.0 until 4.14.5, Wazuh Manager allows a low-privilege read-only API user with manager:read permission to retrieve the cluster key from the element in ossec.c…
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High 7.2
stigmem before 0.9.0a12 Cross-Tenant BOLA via decay sweep
stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations affecting all tenants. Attackers can s…
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High 8.6
stigmem before 0.9.0a12 Cross-Tenant BOLA via quarantine
stigmem-node before 0.9.0a12 contains a broken object level authorization (cross-tenant BOLA) vulnerability in the quarantine review endpoints. On multi-tenant deployments running the opt-in stigmem-plugin-multi-tenant, the list/count queries and _get_quarant…
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High 7.5
Vikunja through 2.4.0 Principal-Type Confusion via LinkSharing
Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing principals with id N are treated as user principals with users.id == N at three permission checks lacking type guards. Attackers with a link-share JWT can remove victims…
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High 8.8
An incorrect authorization vulnerability exists in acmailer, which may allow a user to create a sub-account that has ad…
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High 8.8
Lemur: Authorization bypass in StrictRolePermission / AuthorityCreatorPermission
Lemur manages TLS certificate creation. Prior to 1.9.1, StrictRolePermission and AuthorityCreatorPermission in lemur/auth/permissions.py call flask_principal.Permission.__init__() with zero Need objects when ADMIN_ONLY_AUTHORITY_CREATION and LEMUR_STRICT_ROLE…
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High 8.8
authentik RAC: access any endpoint via an unrelated application
authentik is an open-source identity provider. Prior to 2026.2.6 and 2026.5.5, the Remote Access Control endpoint list returns every configured endpoint to any authenticated user regardless of which applications the user may access, and the response includes …
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High 7.5
SiYuan before v3.7.4 Incorrect Authorization via Publish Access
SiYuan before v3.7.4 contains an incorrect authorization vulnerability in eight publish-mode reader-facing endpoints that filter results using the visibility list instead of the disabled list. Anonymous visitors can discover and read content from documents ex…
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High 8.3
Insufficient server-side validation of board member role fields permits privilege escalation
Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21, 11.8.x <= 11.8.3 fail to validate BoardMember.Scheme* fields server-side on insert and archive-import paths which allows a board editor or non-guest team member to grant board admin to arbitrary users…
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High 7.5CVE-2026-71518 Public exploit
Typemill < 2.26.0 Authorization Bypass via Media File Download Route
Typemill before 2.26.0 contains an authorization bypass vulnerability in the media file download route that allows unauthenticated attackers to access restricted files by submitting path-equivalent URL variants. Attackers can substitute normalized path forms …
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High 7.0
Kong Mesh multi-zone: the global control plane attributes KDS-synced resources by an unvalidated in-band zone identifier
On a Kong Mesh global control plane, resources received over the zone-to-global KDS sync are attributed using the in-band, sender-controlled ControlPlane.Identifier rather than the authenticated zone identity derived from the connection. Authenticated zones c…
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High 8.1
Privilege Escalation
A privilege escalation vulnerability exists in Tenable Security Center that allows a user with "Security Manager" role and "manage user" permission on a single group to modify users belonging to other groups. This bypasses the intended access control restrict…
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High 7.1
CrateDB's Blob HTTP handler bypasses authorization
CrateDB is a distributed SQL database. Prior to versions 6.2.8 and 6.3.2, any authenticated user can read or delete any blob whose SHA-1 digest they know, and can plant new blobs unconditionally, in any blob table, regardless of `GRANT`s. CrateDB has two ways…
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High 7.7
Budibase 3.39.4 before 3.40.0 Authorization Regression via S3 Presigned URL
Budibase versions 3.39.4 before 3.40.0 contain an authorization regression in the S3 attachment upload endpoint that allows BASIC users to obtain S3 PutObject presigned URLs by sending POST requests to the attachments endpoint. The route was changed from a BU…
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High 8.8
Grav through 2.0.11 Authentication Bypass via Flex Objects
The Flex Objects plugin (through 1.4.6, tested with Grav 2.0.11) contains an incorrect authorization vulnerability in its Flex Objects API. FlexApiController::update() checks only the general Flex directory permission and does not apply the additional target/…
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High 8.8
Budibase: Privilege escalation via public role assignment API missing app-level authorization
Budibase is an open-source low-code platform. Prior to 3.39.24, POST /api/public/v1/roles/assign called validateGlobalRoleUpdate without checking appBuilder.appId or role.appId in packages/server/src/api/controllers/public/globalRoleValidation.ts. An app-scop…
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High 8.8
OpenChoreo: Cross-project command execution and wirelog view access via OpenChoreo openchoreo-api exec and wirelogs endpoints
OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.1.6 and 1.2.3, internal/openchoreo-api/api/handlers/exec.go and internal/openchoreo-api/api/handlers/wirelogs.go authorize component:exec and wirelogs:view using the caller-su…
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High 7.1
Incorrect Authorization in Kibana Fleet Leading to Privilege Escalation
Incorrect Authorization (CWE-863) in Kibana Fleet can lead to privilege escalation via Privilege Abuse (CAPEC-122). Fleet restricts some callers to managing integration policies for one specific integration. When an existing integration policy was updated, th…
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High 7.1
Incorrect Authorization in Kibana Agent Builder Leading to Disclosure and Tampering of Private Agents
Kibana Agent Builder determines whether a caller owns a private agent by comparing a stable user identifier when one is recorded, and falling back to a comparison of the username when it is not. A username is not unique across Elasticsearch authentication rea…
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High 7.7
Incorrect Authorization in Kibana Leading to Disclosure of Elastic Defend Endpoint Event Data
The Elastic Security capability that suggests existing field values while a user authors endpoint policy artifacts queries Elastic Defend event data with Kibana's internal Elasticsearch account instead of the account of the requesting user. Only Kibana featur…
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High 7.1
vantage6: Algorithm developer can edit another developer's algorithm that is pending / under review
vantage6 is an open-source infrastructure for privacy preserving analysis. In version 5.0.2 and earlier, the algorithm-store edit permission lacks an ownership check, allowing one algorithm developer to alter another developer's algorithm while it is pending …
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High 8.1
Public-only tokens bypass private-resource restrictions on `/api/v1/user` self routes
Public-only tokens bypass private-resource restrictions on `/api/v1/user` self routes
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High 8.1
Branch Protection Bypass via PR Retargeting Preserves Stale `official` Approval Flag
Branch Protection Bypass via PR Retargeting Preserves Stale `official` Approval Flag
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High 7.5
Private org member list leaked via /members API endpoint — incomplete fix for PR #38145
Private org member list leaked via /members API endpoint — incomplete fix for PR #38145
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High 7.5
REST API exposes organization membership of private organizations to public
REST API exposes organization membership of private organizations to public
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High 7.1
Fork-PR Actions task can read a third private repository via the collaborative-owner branch (missing fork-PR guard)
Fork-PR Actions task can read a third private repository via the collaborative-owner branch (missing fork-PR guard)
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High 8.1
OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)
OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)
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High 7.4
rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure
rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent hosts deny rules by inducing DNS resolution failures during hostname-based access control evaluation. When a DNS lookup for a hostname-based de…
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High 8.1CVE-2026-70463 Public exploit
rsync 3.1.0 < 3.5.0 Authorization Bypass via auth users Directive Parsing
rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name co…