CVE Catalog

CVE-2026-5323

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.13%

3th percentile - higher than 3% of all known CVEs

Summary

The a11y-mcp tool by priyankark versions up to 1.0.5 contains a Server-Side Request Forgery vulnerability in the A11yServer function in src/index.js. The attack must be initiated locally, and the exploit has been made public. The vendor notes it is a local stdio MCP server with no HTTP endpoint.

Risk Assessment

It may allow a local attacker to make unauthorized requests on behalf of the server, potentially accessing internal resources. Given the local nature and public exploit, the risk is limited but noteworthy.

Recommendation

Update a11y-mcp to version 1.0.6 or later, which contains the fix (commit e3e11c9e8482bd06b82fd9fced67be4856f0dffc).

Related vulnerabilities

Original NVD description (English source)

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."

Vulnerability data from NVD (NIST) · CISA KEV · EPSS