CVE-2026-5323

MEDIUM

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

Title source: cna
STIX 2.1

Description

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."

References (6)

Core 6
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-354655 | priyankark a11y-mcp index.js A11yServer server-side request forgery
https://vuldb.com/vuln/354655
Signature, Permissions Required signature permissions-required
VDB-354655 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/354655/cti
Third Party Advisory third-party-advisory
Submit #780752 | priyankark a11y-mcp 1.0.4 Server-Side Request Forgery
https://vuldb.com/submit/780752
Exploit exploit issue-tracking
https://github.com/wing3e/public_exp/issues/17

Scores

CVSS v3 5.3
EPSS 0.0013
EPSS Percentile 2.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-918
Status published
Products (8)
npm/a11y-mcp 0 - 1.0.5npm
priyankark/a11y-mcp 1.0.0
priyankark/a11y-mcp 1.0.1
priyankark/a11y-mcp 1.0.2
priyankark/a11y-mcp 1.0.3
priyankark/a11y-mcp 1.0.4
priyankark/a11y-mcp 1.0.5
priyankark/a11y-mcp 1.0.6
Published Apr 02, 2026
Tracked Since Apr 02, 2026