CVE-2026-71206

shiori - JWT CheckToken Never Re-Validates Account State, Allowing Stale-Privilege Access After Deletion or Demotion

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.

Affected

go-shiori · shiori

CVSS v3.1 CNA

8.3 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

EPSS

0.37% chance of exploitation in the next 30 days, 30th percentile

Published

2026-08-05

Updated

2026-08-10

Proof-of-concept exploits (1)

• Nel-droid/CVE-2026-71206-PoC0★ · 2026-08-16

References

• CVE Record
• NVD entry

Related

• CVE-2026-71203
• CVE-2026-71204
• CVE-2026-71205