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TI-2026-49881 Aliases CVE-2026-71206GHSA-m8xp-ww9g-3j6j

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

Priority LOW 38CWE-613Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-613.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00374 31st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
go-shiorishioriall versions—No fix listedCNA
  • shiori Vendorgo-shiori Affected all versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71206
  2. 2026-10-03 Alias added: GHSA-m8xp-ww9g-3j6j

References

Advisory 1

  • TI-2026-44068 Shiori Authenticated Privilege Escalation via PATCH /api/v1/auth/account CVSS 4.0HIGH 8.7
  • TI-2025-37707 A lack of rate limiting in the login page of shiori v1.7.4 and below allows attackers to… CVSS 3.1MEDIUM 6.5
  • TI-2026-49947 go-shiori Server-Side Request Forgery via Unrestricted Bookmark URL Fetch CVSS 3.1HIGH 8.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences