cve.bz

CVE-2021-3311

9.8 criticalEPSS 2.9%

Critical (9.8) in octobercms october. EPSS 2.9% chance of exploitation in the next 30 days.

An issue was discovered in October through build 471. It reactivates an old session ID (which had been invalid after a logout) once a new login occurs. NOTE: this violates the intended Auth/Manager.php authentication behavior but, admittedly, is only relevant if an old session ID is known to an attacker.

Severity

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.9% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)
CWE
CWE-613
Published
Modified
Record from
the NVD, synced

Affected

References

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