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Vulnerability record · CVE-2021-25979 · published 8 November 2021

CVE-2021-25979: Apostrophecms insufficient session expiration vulnerability

Apostrophecms · Apostrophecms

Apostrophe CMS versions prior to 3.3.1 did not invalidate existing login sessions when disabling a user account or changing the password, creating a situation in which a device compromised by a third party could not be locked out by those means. As a mitigation for older releases the user account in question can be archived (3.x) or moved to the trash (2.x and earlier) which does disable the existing session.

9.8 CVSS 3.1 Critical EPSS 1.1% · top 34.7% CWE-613 · Insufficient session expiration
9.8CVSS 3.1 base score, v2 7.5
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Apostrophe CMS versions prior to 3.3.1 did not invalidate existing login sessions when disabling a user account or changing the password, creating a situation in which a device compromised by a third party could not be locked out by those means. As a mitigation for older releases the user account in question can be archived (3.x) or moved to the trash (2.x and earlier) which does disable the existing session.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/apostrophecms/apostrophe/commit/c211b211f9f4303a77a307cf41aac9b4ef8d2c7c PatchThird Party Advisory
https://github.com/apostrophecms/apostrophe/commit/c211b211f9f4303a77a307cf41aac9b4ef8d2c7c PatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-25979), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.