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TI-2026-04655 Aliases CVE-2026-5323GHSA-prmx-7v35-7q82

priyankark a11y-mcp index.js A11yServer server-side request forgery

Priority MEDIUM 55CWE-918Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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."

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00132 2nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed a11y-mcp (priyankark): 1.0.6a11y-mcp (npm): 1.0.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
priyankarka11y-mcp1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.51.0.6Patch availableCNA
—a11y-mcp (npm)before 1.0.51.0.5Patch availableGHSA-prmx-7v35-7q82
  • a11y-mcp Vendorpriyankark Affected 1.0.0; 1.0.1; 1.0.2; 1.0.3; 1.0.4; 1.0.5 Fixed in 1.0.6 Patch available CNA
  • a11y-mcp (npm) Vendor— Affected before 1.0.5 Fixed in 1.0.5 Patch available GHSA-prmx-7v35-7q82

Remediation

  • Fix · CNA a11y-mcp (priyankark) Fixed in 1.0.6
  • Fix · GHSA-prmx-7v35-7q82 a11y-mcp (npm) Fixed in 1.0.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5323
  2. 2026-10-03 Alias added: GHSA-prmx-7v35-7q82

References

Exploit 1

Patch 1

Advisory 1

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences