CVE-2026-39924

Source
https://cve.org/CVERecord?id=CVE-2026-39924
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39924.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-39924
Published
2026-08-05T14:40:27.741Z
Modified
2026-08-12T03:51:22.136443740Z
Severity
  • 7.6 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Flarum < 1.8.16 Session Persistence via Improper Access Token Revocation
Details

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 accesstokens table is never cleared on password change events. The TokensClearer::clearPasswordTokens() function only removes rows from the passwordtokens 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.

Database specific
{
    "cwe_ids": [
        "CWE-613"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39924.json",
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / github.com/flarum/framework

Affected ranges

Type
GIT
Repo
https://github.com/flarum/framework
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
Fixed
Database specific
Show details
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.8.16"
        }
    ]
}

Affected versions

v1.*
v1.3.0
v1.3.1
v1.4.0
v1.5.0
v1.6.0
v1.6.1
v1.7.0
v1.7.1
v1.8.0
v1.8.1
v1.8.10
v1.8.11
v1.8.12
v1.8.13
v1.8.14
v1.8.15
v1.8.2
v1.8.3
v1.8.5
v1.8.6
v1.8.7
v1.8.8
v1.8.9

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39924.json"