Server-Side Request Forgery Vulnerability in Priyankark a11y-mcp
CVE-2026-5323
Key Information:
- Vendor
Priyankark
- Status
- Vendor
- CVE Published:
- 2 April 2026
Badges
What is CVE-2026-5323?
A vulnerability has been identified in the Priyankark a11y-mcp up to version 1.0.5, affecting the A11yServer function in the src/index.js file. This vulnerability could allow local attackers to initiate server-side request forgery (SSRF) exploits. Although the attack requires local access, it poses potential risks, especially in environments where the software operates in an untrusted or shared context. Upgrading to version 1.0.6 resolves the issue, and the vendor has provided context regarding the risk, clarifying that a11y-mcp functions as a local stdio MCP server without external HTTP endpoints. Users are strongly advised to implement the available patch, referenced as e3e11c9e8482bd06b82fd9fced67be4856f0dffc, to ensure system security.
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Affected Version(s)
a11y-mcp 1.0.0
a11y-mcp 1.0.1
a11y-mcp 1.0.2
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
CVSS V4
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved