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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-39924 Detail

Description

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 cleared on password change events. The TokensClearer::clearPasswordTokens() function only removes rows from the password_tokens table while leaving all active session cookies and API bearer tokens intact, including long-lived RememberAccessToken entries, and administrator-forced password resets via the user update endpoint are equally ineffective at revoking attacker-held sessions.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 7.6 HIGH
Vector:  CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/flarum/framework/commit/5f080293a029d0d273eb9678d597c74ea86a3bcc VulnCheck
https://github.com/flarum/framework/pull/4546 VulnCheck
https://github.com/flarum/framework/releases/tag/v1.8.16 VulnCheck
https://www.vulncheck.com/advisories/flarum-session-persistence-via-improper-access-token-revocation VulnCheck

Weakness Enumeration

CWE-ID CWE Name Source
CWE-613 Insufficient Session Expiration VulnCheck  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-39924
NVD Published Date:
08/05/2026
NVD Last Modified:
08/05/2026
Source:
VulnCheck