What is CVE-2026-39924?

CVE-2026-39924 is a medium-severity vulnerability in Flarum Framework, classified under Insufficient Session Expiration. CVSS score: 6.8/10. Published 2026-08-05.

How severe is CVE-2026-39924?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Flarum Framework

CVE-2026-39924

Flarum before 1.8.16 contains an improper session invalidation vulnerability that allows attackers who hold a valid session token to retain full account access after a victim changes their password, because the access_tokens table is never…

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Flarum Framework — versions 0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-39924?: CVE-2026-39924 is a medium-severity vulnerability in Flarum Framework, classified under Insufficient Session Expiration. CVSS score: 6.8/10. Published 2026-08-05.
How severe is CVE-2026-39924?: Medium severity. CVSS v3 base score is 6.8 out of 10.