9.8

CVE-2021-25979: Apostrophe - Insufficient Session Expiration

Modified
AliasesGHSA-9j9m-8wjc-ff96
Published 08-11-2021Last modified 30-04-2025

Vulnerability summary

CVE-2021-25979 is a critical (CVSS 9.8) Insufficient Session Expiration vulnerability in apostrophe. EPSS estimates a 1.14% chance of exploitation in the next 30 days, higher than 66.3% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
1.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 08-11-2021
    PublishedVulnerability first disclosed.
  2. 30-04-2025
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.14%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.14% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apostrophe1 product
  • apostrophe≥ unspecified, ≤ 3.3.1 | ≥ 2.63.0, < unspecified
Apostrophecms1 product
Npm1 product
  • apostrophe≥ 2.63.0, < 3.4.0

3 vendors · 3 products

References

3 links