Read the docs

Browser cache exposure in Drupal Simple OAuth leaks sensitive data

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 Simple OAuth (OAuth2) & OpenID Connect versions from 6.1.0 before 6.1.3 are affected. The module lets sensitive information persist in the web browser cache (CWE-525). A remote attacker with low privileges can access this information without user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal Simple OAuth (OAuth2) & OpenID Connect allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Simple OAuth (OAuth2) & OpenID Connect versions: from 6.1.0 to 6.1.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00183 7th percentileScored 2026-11-07
Fix Fixed Simple OAuth (OAuth2) & OpenID Connect (Drupal): 6.1.3

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
DrupalSimple OAuth (OAuth2) & OpenID Connect6.1.0 to before 6.1.36.1.3Patch availableCNA
  • Simple OAuth (OAuth2) & OpenID Connect VendorDrupal Affected 6.1.0 to before 6.1.3 Fixed in 6.1.3 Patch available CNA

Remediation

Upgrade Drupal Simple OAuth (OAuth2) & OpenID Connect to version 6.1.3, as described in Drupal advisory SA-CONTRIB-2026-242.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Simple OAuth (OAuth2) & OpenID Connect (Drupal) Fixed in 6.1.3

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-114542
  2. 2026-10-30 Alias added: GHSA-95hc-mwrf-rfj4
  3. 2026-11-06 CVSS score added · CISA ADP
  4. 2026-11-06 CISA SSVC decision points changed

References

  • 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