shiori - JWT CheckToken Never Re-Validates Account State, Allowing Stale-Privilege Access After Deletion or Demotion
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.2epss 0.2%
from disclosure to weapon11 days
Published on NVDAug 5
1st PoC+11d
exploitation probability
0.2%top 88% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Shiori's CheckToken function (internal/domains/auth.go) validates only the JWT's HMAC signature and returns the embedded claims.Account object unmodified, never re-fetching the account from the database. No session store or token-revocation mechanism exists in the codebase.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Affected products
go-shiori · shioripublic PoCs found — 1
githubgithub.com/Nel-droid/CVE-2026-71206-PoC★ 0⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/go-shiori/shiori