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TI-2026-79087 Aliases CVE-2026-87940GHSA-jxp7-mx43-ch9f

Access bypass in Drupal Key auth module through browser cache

Priority LOW 24CWE-525Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Drupal Key auth versions from 0.0.0 before 2.2.4 store sensitive information in the web browser cache (CWE-525). A remote attacker with low privileges can read this cached data and bypass access control restrictions.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal Key auth allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Key auth versions: from 0.0.0 to 2.2.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00232 14th percentileScored 2026-11-07
Fix Fixed Key auth (Drupal): 2.2.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DrupalKey auth0.0.0 to before 2.2.42.2.4Patch availableCNA
  • Key auth VendorDrupal Affected 0.0.0 to before 2.2.4 Fixed in 2.2.4 Patch available CNA

Remediation

Upgrade Drupal Key auth to version 2.2.4, which fixes the flaw, as described in Drupal advisory SA-CONTRIB-2026-138.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Key auth (Drupal) Fixed in 2.2.4

Timeline

  1. 2026-10-22 Threatist record created from CVE-2026-87940
  2. 2026-10-22 Alias added: GHSA-jxp7-mx43-ch9f
  3. 2026-10-22 CVSS score added · CISA ADP
  4. 2026-10-22 CISA SSVC decision points changed

References

Other 1

  • TI-2026-07979 Drupal core - Highly critical - SQL injection - SA-CORE-2026-004 KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05494 Drupal core - Highly critical - Remote Code Execution - SA-CORE-2018-004 KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-05493 Improper input validation in Drupal before 7.58, 8.x before 8.3.9, 8.4.x before 8.4.6… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-10731 Unrestricted file upload in Drupal Core KEVCVSS 3.1HIGH 8.8
  • TI-2019-04505 Drupal core - Highly critical - Remote Code Execution KEVCVSS 3.1HIGH 8.1
  • TI-2020-17477 Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks… KEVCVSS 3.1HIGH 7.8
See all 941 →

Sources

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