What is GHSA-9xwc-vwww-qqmw?

GHSA-9xwc-vwww-qqmw is a security advisory published by GitHub Security Advisories with High severity. Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing...

Which CVE IDs does GHSA-9xwc-vwww-qqmw cover?

GHSA-9xwc-vwww-qqmw covers the following CVE IDs: CVE-2026-76216. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-9xwc-vwww-qqmw?

GHSA-9xwc-vwww-qqmw has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-9xwc-vwww-qqmwHighCVSS 7.5

Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing...

Vendor

GitHub Security Advisories

Published

August 19, 2026

Last Modified

August 19, 2026

🔗 CVE IDs covered (1)

CVE-2026-76216 →

📋 Description

Vikunja through 2.4.0 contains a principal-type confusion vulnerability where LinkSharing principals with id N are treated as user principals with users.id == N at three permission checks lacking type guards. Attackers with a link-share JWT can remove victims from teams, enumerate and delete victim bot users, or read team rosters by exploiting id collisions in the autoincrement space.

🔗 References (4)

https://github.com/go-vikunja/vikunja/security/advisories/GHSA-32r8-5843-4qw2
https://nvd.nist.gov/vuln/detail/CVE-2026-76216
https://www.vulncheck.com/advisories/vikunja-through-principal-type-confusion-via-linksharing
https://github.com/advisories/GHSA-9xwc-vwww-qqmw