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A11Y Mcp EUVD-2026-18130

| CVE-2026-5323 LOW
Server-Side Request Forgery (SSRF) (CWE-918)
2026-04-02 VulDB
1.9
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
1.9 LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

7
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
4.8 (MEDIUM) 1.9 (LOW)
PoC Detected
Apr 03, 2026 - 16:10 vuln.today
Public exploit code
EUVD ID Assigned
Apr 02, 2026 - 06:45 euvd
EUVD-2026-18130
Analysis Generated
Apr 02, 2026 - 06:45 vuln.today
Patch released
Apr 02, 2026 - 06:45 nvd
Patch available
CVE Published
Apr 02, 2026 - 06:15 nvd
MEDIUM 4.8

DescriptionCVE.org

A vulnerability was found in priyankark a11y-mcp up to 1.0.5. This vulnerability affects the function A11yServer of the file src/index.js. The manipulation results in server-side request forgery. The attack must be initiated from a local position. The exploit has been made public and could be used. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. Upgrading to version 1.0.6 is able to resolve this issue. The patch is identified as e3e11c9e8482bd06b82fd9fced67be4856f0dffc. It is recommended to upgrade the affected component. The vendor acknowledged the issue but provides additional context for the CVSS rating: "a11y-mcp is a local stdio MCP server - it has no HTTP endpoint and is not network-accessible. The caller is always the local user or an LLM acting on their behalf with user approval."

AnalysisAI

Server-side request forgery (SSRF) in priyankark a11y-mcp up to version 1.0.5 allows local authenticated attackers to perform arbitrary outbound requests via the A11yServer function in src/index.js, potentially enabling access to internal services or exfiltration of sensitive data. The vulnerability requires local access and user approval (as the tool operates as a local stdio MCP server with no network exposure), and publicly available exploit code exists. …

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Vulnerability AssessmentAI

Risk Assessment The CVSS v3.1 score of 5.3 reflects a Medium-severity vulnerability with Attack Vector Local (AV:L), low Attack Complexity (AC:L), and requirement for Low Privilege (PR:L). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with local access (or a maliciously-crafted LLM prompt executed within the user's approved a11y-mcp environment) could craft a specially-formed input to the A11yServer function that triggers an SSRF condition. For example, the attacker might provide a URL parameter that causes the server to fetch content from an internal service running on localhost or a private network address, potentially accessing sensitive data or triggering unintended actions on internal systems. …
Remediation Upgrade a11y-mcp to version 1.0.6 or later, which incorporates the fix identified by commit e3e11c9e8482bd06b82fd9fced67be4856f0dffc. … Detailed patch versions, workarounds, and compensating controls in full report.

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EUVD-2026-18130 vulnerability details – vuln.today

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