What is CVE-2026-71206?

CVE-2026-71206 is a high-severity vulnerability in Go-Shiori Shiori, classified under Insufficient Session Expiration. CVSS score: 8.3/10. Published 2026-08-05.

How severe is CVE-2026-71206?

High severity. CVSS v3 base score is 8.3 out of 10.

Is CVE-2026-71206 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Go-Shiori Shiori

CVE-2026-71206

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.

EPSS: 0.003 (20.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.

Affected products

Go-shiori Shiori — versions 0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

Public proof-of-concept exploits

Nel-droid/CVE-2026-71206-PoC

References

309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c (third-party-advisory)

Frequently asked questions

What is CVE-2026-71206?: CVE-2026-71206 is a high-severity vulnerability in Go-Shiori Shiori, classified under Insufficient Session Expiration. CVSS score: 8.3/10. Published 2026-08-05.
How severe is CVE-2026-71206?: High severity. CVSS v3 base score is 8.3 out of 10.
Is CVE-2026-71206 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.