Browser cache exposure in Drupal Simple OAuth leaks sensitive data
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
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
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
- 2026-10-30 Threatist record created from CVE-2026-114542
- 2026-10-30 Alias added: GHSA-95hc-mwrf-rfj4
- 2026-11-06 CVSS score added · CISA ADP
- 2026-11-06 CISA SSVC decision points changed
References
More Drupal vulnerabilities
- 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
Sources
- CVE-2026-114542 · CVE Program
- CVE-2026-114542 · NVD
- FIRST EPSS
- GHSA-95hc-mwrf-rfj4 · GitHub Advisory Database · CC BY 4.0
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