CVE-2026-76216

原文の説明

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.

影響を受けるソフトウェア

• Vikunja ≤ 2.4.0 リポジトリ・パッケージ一致

詳細

公開日

2026-08-19

最終更新

2026-08-21

CVSS ベクター

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CWE

CWE-639

参考資料

• cve.org/CVE-2026-76216
• nvd.nist.gov/vuln/detail/CVE-2026-76216
• github.com/go-vikunja/vikunja/security/advisories/GHSA-32r8-5843-4qw2
• www.vulncheck.com/advisories/vikunja-through-principal-type-confusion-via-linksharing