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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."

PUBLISHED Reserved 2026-04-01 | Published 2026-04-02 | Updated 2026-04-03 | Assigner VulDB




MEDIUM: 4.8CVSS: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
MEDIUM: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
MEDIUM: 5.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
4.3AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C

Problem types

Server-Side Request Forgery

Product status

1.0.0
affected

1.0.1
affected

1.0.2
affected

1.0.3
affected

1.0.4
affected

1.0.5
affected

1.0.6
unaffected

Timeline

2026-04-01:Advisory disclosed
2026-04-01:VulDB entry created
2026-04-01:VulDB entry last update

Credits

BigW (VulDB User) reporter

References

vuldb.com/vuln/354655 (VDB-354655 | priyankark a11y-mcp index.js A11yServer server-side request forgery) vdb-entry technical-description

vuldb.com/vuln/354655/cti (VDB-354655 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/780752 (Submit #780752 | priyankark a11y-mcp 1.0.4 Server-Side Request Forgery) third-party-advisory

github.com/wing3e/public_exp/issues/17 exploit issue-tracking

github.com/...ommit/e3e11c9e8482bd06b82fd9fced67be4856f0dffc patch

github.com/priyankark/a11y-mcp/ product

cve.org (CVE-2026-5323)

nvd.nist.gov (CVE-2026-5323)

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