Description
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 products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| go-shiori | shiori | — | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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Nel-droid/CVE-2026-71206-PoC ★ 0 · Aug 16, 2026
PoC: Shiori JWT CheckToken never re-validates account state (CVE-2026-71206, High 8.2)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- https://github.com/go-shiori/shiori third-party-advisory