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Critical

Apostrophe CMS Insufficient Session Expiration vulnerability

  • Disclosed: 10.11.2021
  • Updated: 11.10.2026 10:22

Apostrophe CMS versions between 2.63.0 to 3.3.1 affected by an insufficient session expiration vulnerability, which allows unauthenticated remote attackers to hijack recently logged-in users' sessions. 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.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
npm package apostrophe >= 2.63.0, < 3.4.0 3.4.0

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-613
Platform
npm
Package
apostrophe
Disclosed
10.11.2021
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-9j9m-8wjc-ff96 - CC BY 4.0

Vulnerability history: apostrophe

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (27) in the archive
Total entries
27
First → latest
09.2020 10.2026
Without a fix
4
Exploited in attacks
0

Severity breakdown

  • Critical 2
  • High 8
  • Medium 13
  • Low 4

Disclosures per year

Severity:
  1. ApostropheCMS: Unauthenticated CSV import requests leave rejected uploads in the system temporary directory
    High · 7.5 CVE-2026-113658 < 4.33.0 4.33.0
  2. ApostropheCMS: Authenticated projection-exclusion prototype-member deletion in @apostrophecms/db-connect causes process-wide denial of service
    High · 7.1 CVE-2026-113666 < 4.33.0 4.33.0
  3. ApostropheCMS: 2nd-order prototype pollution via PATCH leading to single-request persistent DoS
    High CVE-2026-71553 <= 4.32.0 no fix
  4. Apostrophe has Server-Side Prototype Pollution in apos.util.set via patch operators that leads to process-wide authorization bypass
    Critical · 9.1 CVE-2026-53609 < 4.31.0 4.31.0
  5. Apostrophe has stored XSS via javascript: URL in Image Widget Link
    High · 7.3 CVE-2026-45011 = 4.29.0 no fix
  6. Apostrophe has a Weak Password Recovery Mechanism for Forgotten Password and Improper Input Validation
    High · 8.1 CVE-2026-45013 <= 4.29.0 no fix
  7. Apostrophe has authenticated SSRF in rich-text widget import via @apostrophecms/area/validate-widget
    High · 7.6 CVE-2026-45012 <= 4.29.0 no fix
  8. Stored XSS in SEO Fields Leads to Authenticated API Data Exposure in ApostropheCMS
    High · 8.7 CVE-2026-35569 < 4.29.0 4.29.0
  9. ApostropheCMS MFA/TOTP Bypass via Incorrect MongoDB Query in Bearer Token Middleware
    High · 8.1 CVE-2026-32730 < 4.28.0 4.28.0
  10. Apostrophe CMS Insufficient Session Expiration vulnerability this entry
    Critical · 9.8 CVE-2021-25979 >= 2.63.0, < 3.4.0 3.4.0

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