Weakness (CWE)
CWE-807: Reliance on Untrusted Inputs in a Security Decision
The product uses a protection mechanism that relies on the existence or values of an input, but the input can be modified by an untrusted actor in a way that bypasses the protection mechanism.
More detail
Without sufficient encryption, integrity checking, or other mechanism, any input that originates from an outsider cannot be trusted.
How to prevent it (5 mitigations)
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Architecture and Design
Store state information and sensitive data on the server side only.
Ensure that the system definitively and unambiguously keeps track of its own state and user state and has rules defined for legitimate state transitions. Do not allow any application user to affect state directly in any way other than through legitimate actions leading to state transitions.
If information must be stored on the client, do not do so without encryption and integrity checking, or otherwise having a mechanism on the server side to catch tampering. Use a message authentication code (MAC) algorithm, such as Hash Message Authentication Code (HMAC) [REF-529]. Apply this against the state or sensitive data that has to be exposed, which can guarantee the integrity of the data - i.e., that the data has not been modified. Ensure that a strong hash function is used (CWE-328).
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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.
With a stateless protocol such as HTTP, use a framework that maintains the state for you.
Examples include ASP.NET View State [REF-756] and the OWASP ESAPI Session Management feature [REF-45].
Be careful of language features that provide state support, since these might be provided as a convenience to the programmer and may not be considering security.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Operation, Implementation
When using PHP, configure the application so that it does not use register_globals. During implementation, develop the application so that it does not rely on this feature, but be wary of implementing a register_globals emulation that is subject to weaknesses such as CWE-95, CWE-621, and similar issues.
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Architecture and Design, Implementation
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
Identify all inputs that are used for security decisions and determine if you can modify the design so that you do not have to rely on submitted inputs at all. For example, you may be able to keep critical information about the user's session on the server side instead of recording it within external data.
Source: MITRE CWE-807
153 results · Feed
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Medium 6.7
UEFI Secure Boot Security Feature Bypass Vulnerability
Reliance on untrusted inputs in a security decision in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
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Medium 6.2
SpotFTP Password Recover 2.4.2 Denial of Service via Name Field
SpotFTP Password Recover 2.4.2 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an oversized buffer in the Name field during registration. Attackers can generate a 256-byte payload, paste it into the…
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Medium 5.9
OpenClaw < 2026.3.22 - Webhook Reply Rebinding via Username Resolution in Synology Chat
OpenClaw before 2026.3.22 contains a webhook reply delivery vulnerability that allows attackers to rebind chat replies to unintended users by exploiting mutable username matching instead of stable numeric user identifiers. Attackers can manipulate username ch…
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Medium 5.7
OpenClaw < 2026.3.22 - Identity Spoofing via rawInput Tool in ACP Permission Resolution
OpenClaw before 2026.3.22 contains an identity spoofing vulnerability in ACP permission resolution that trusts conflicting tool identity hints from rawInput and metadata. Attackers can spoof tool identities through rawInput parameters to suppress dangerous-to…
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Medium 4.2
OpenClaw < 2026.3.22 - Policy Confusion via Room Name Collision in Nextcloud Talk
OpenClaw before 2026.3.22 contains a policy confusion vulnerability in room authorization that matches colliding room names instead of stable room tokens. Attackers can exploit similarly named rooms to bypass allowlist policies and gain unauthorized access to…
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Medium 4.2
OpenClaw < 2026.3.25 - Authorization Bypass via Group Policy Rebinding with Mutable Space displayName
OpenClaw before 2026.3.25 contains an authorization bypass vulnerability in Google Chat group policy enforcement that relies on mutable space display names. Attackers can rebind group policies by changing or colliding space display names to gain unauthorized …
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Critical 9.8
Contemporary Controls BASC 20T Reliance on Untrusted Inputs in a Security Decision
An attacker could use data obtained by sniffing the network traffic to forge packets in order to make arbitrary requests to Contemporary Controls BASC 20T.
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High 7.5
Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.…
KEV Aug 4, 2026 -
Medium 5.3
GINA Domain Switch
SEPPmail Secure Email Gateway before version 15.0.3 allows an external user to modify GINA webdomain metadata and bypass per-domain restrictions.
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Critical 9.8
OpenClaw < 2026.3.12 - Weak Authorization via Mutable Group Names in Zalouser Allowlist
OpenClaw before 2026.3.12 contains a weak authorization vulnerability in Zalouser allowlist mode that matches mutable group display names instead of stable group identifiers. Attackers can create groups with identical names to allowlisted groups to bypass cha…
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Medium 6.2
Pixel Studio 2.17 Denial of Service via Malformed Input
Pixel Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can trigger the vulnerability by entering arbitrary characters, causing th…
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Medium 6.2
ASPRunner.NET 10.1 Denial of Service via Table Name Field
ASPRunner.NET 10.1 contains a denial of service vulnerability that allows local attackers to crash the application by supplying an excessively long string in the table name field. Attackers can input a buffer of 10000 characters in the table name parameter du…
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Medium 6.2
Pidgin 2.13.0 Denial of Service via Malformed Username
Pidgin 2.13.0 contains a denial of service vulnerability that allows local attackers to crash the application by providing an excessively long username string during account creation. Attackers can input a buffer of 1000 characters in the username field and t…
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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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High 7.1
OpenClaw < 2026.2.25 - Authentication Bypass via Control UI client.id Parameter
OpenClaw versions prior to 2026.2.25 contain an authentication bypass vulnerability in the trusted-proxy Control UI pairing mechanism that accepts client.id=control-ui without proper device identity verification. An authenticated node role websocket client ca…
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Medium 5.3
Vikunja has Rate-Limit Bypass for Unauthenticated Users via Spoofed Headers
Vikunja is an open-source self-hosted task management platform. Starting in version 0.8 and prior to version 2.2.0, unauthenticated users are able to bypass the application's built-in rate-limits by spoofing the `X-Forwarded-For` or `X-Real-IP` headers due to…
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High 7.7
Claude Code has a Workspace Trust Dialog Bypass via Repo-Controlled Settings File
Claude Code is an agentic coding tool. Versions prior to 2.1.53 resolved the permission mode from settings files, including the repo-controlled .claude/settings.json, before determining whether to display the workspace trust confirmation dialog. A malicious r…
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Medium 5.3
OpenClaw < 2026.2.21 - Client IP Spoofing via X-Forwarded-For Header Parsing
OpenClaw versions prior to 2026.2.21 improperly parse the left-most X-Forwarded-For header value when requests originate from configured trusted proxies, allowing attackers to spoof client IP addresses. In proxy chains that append or preserve header values, a…
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High 8.9
WorkflowTemplate Security Bypass via podSpecPatch in Strict/Secure Reference Mode
Argo Workflows is an open source container-native workflow engine for orchestrating parallel jobs on Kubernetes. From 2.9.0 to before 4.0.2 and 3.7.11, A user who can submit Workflows can completely bypass all security settings defined in a WorkflowTemplate b…
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High 8.8
OpenClaw < 2026.2.14 - Command Hijacking via Unsafe PATH Handling
OpenClaw versions prior to 2026.2.14 contain a command hijacking vulnerability that allows attackers to execute unintended binaries by manipulating PATH environment variables through node-host execution or project-local bootstrapping. Attackers with authentic…
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High 7.3
Plex-configured Seerr instances vulnerable to unauthenticated account registration via Jellyfin authentication endpoint
Seerr is an open-source media request and discovery manager for Jellyfin, Plex, and Emby. Starting in version 2.0.0 and prior to version 3.1.0, an authentication guard logic flaw in `POST /api/v1/auth/jellyfin` allows an unauthenticated attacker to register a…
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High 7.8
Microsoft Word Security Feature Bypass Vulnerability
Reliance on untrusted inputs in a security decision in Microsoft Office Word allows an unauthorized attacker to bypass a security feature locally.
KEV Feb 10, 2026 -
High 7.7
Cube privilege escalation via a specially crafted request
Cube is a semantic layer for building data applications. From 0.27.19 to before 1.5.13, 1.4.2, and 1.0.14, it is possible to make a specially crafted request with a valid API token that leads to privilege escalation. This vulnerability is fixed in 1.5.13, 1.4…
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High 7.8
vscode-spell-checker has a workspace-trust bypass Code Execution
vscode-spell-checker is a basic spell checker that works well with code and documents. Prior to v4.5.4, DocumentSettings._determineIsTrusted treats the configuration value cSpell.trustedWorkspace as the authoritative trust flag. The value defaults to true (pa…
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High 7.8
Microsoft Office Security Feature Bypass Vulnerability
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
KEV Jan 26, 2026 -
Medium 6.5
MyTube has Rate Limiting Bypass via X-Forwarded-For Header Spoofing
MyTube is a self-hosted downloader and player for several video websites. Prior to version 1.7.71, a rate limiting bypass via `X-Forwarded-For` header spoofing allows unauthenticated attackers to bypass IP-based rate limiting on general API endpoints. Attacke…
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High 7.5
Windows Kerberos Elevation of Privilege Vulnerability
Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
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Medium 6.5
Mega-Fence (webgate-lib.*) 25.1.914 and prior trusts the first value of the X-Forwarded-For (XFF) header as the client …
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High 7.5
1Panel – CAPTCHA Bypass via Client-Controlled Flag
1Panel is an open-source, web-based control panel for Linux server management. Versions 2.0.13 and below allow an unauthenticated attacker to disable CAPTCHA verification by abusing a client-controlled parameter. Because the server previously trusted this val…
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Medium 5.3
cpp-httplib Untrusted HTTP Header Handling: X-Forwarded-For/X-Real-IP Trust
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can supply X-For…
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Critical 10.0
cpp-httplib Untrusted HTTP Header Handling: Internal Header Shadowing (REMOTE*/LOCAL*)
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.27.0, a vulnerability allows attacker-controlled HTTP headers to influence server-visible metadata, logging, and authorization decisions. An attacker can inject heade…
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High 7.3
Authentication Bypass in Turkguven's Perfektive
Improper Restriction of Excessive Authentication Attempts, Client-Side Enforcement of Server-Side Security, Reliance on Untrusted Inputs in a Security Decision vulnerability in Turkguven Software Technologies Inc. Perfektive allows Brute Force, Authentication…
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Critical 9.8
oobabooga text-generation-webui trust_remote_code Reliance on Untrusted Inputs Remote Code Execution Vulnerability
oobabooga text-generation-webui trust_remote_code Reliance on Untrusted Inputs Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of oobabooga text-generation-webui. Authenticati…
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Critical 9.8
oobabooga text-generation-webui trust_remote_code Reliance on Untrusted Inputs Remote Code Execution Vulnerability
oobabooga text-generation-webui trust_remote_code Reliance on Untrusted Inputs Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of oobabooga text-generation-webui. Authenticati…
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Medium 5.3
Easy Digital Download <= 3.5.2 - Insufficient Verification to Order Manipulation
The Easy Digital Downloads plugin for WordPress is vulnerable to Order Manipulation in all versions up to, and including, 3.5.2 due to an order verification bypass. The verification is unconditionally skipped when the POST body includes verification_override=…
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High 7.0
Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability
Reliance on untrusted inputs in a security decision in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.
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High 7.5
X-Forwarded-For Header Spoofing Bypasses Litestar Rate Limiting
Litestar is an Asynchronous Server Gateway Interface (ASGI) framework. In version 2.17.0, rate limits can be completely bypassed by manipulating the X-Forwarded-For header. This renders IP-based rate limiting ineffective against determined attackers. Litestar…
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High 7.3
Improper validation of TrustedOrigins allows CSRF attacks in github.com/gorilla/csrf
Hosts listed in TrustedOrigins implicitly allow requests from the corresponding HTTP origins, allowing network MitMs to perform CSRF attacks. After the CVE-2025-24358 fix, a network attacker that places a form at http://example.com can't get it to submit to h…
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Critical 9.3
flaskBlog allows arbitrary privilege escalation
flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, an arbitrary user can change his role to "admin", giving its relative privileges (e.g. delete users, posts, comments etc.). The problem is in the routes/adminPanelUsers file.
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Medium 5.3
flaskBlog Stored XSS Vulnerability
flaskBlog is a blog app built with Flask. In 2.8.0 and earlier, when creating a post, there's no validation of the content of the post stored in the variable "postContent". The vulnerability arises when displaying the content of the post using the | safe filt…