Webform access bypass via forceful browsing
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.
Summary
Drupal Webform contains an Incorrect Authorization flaw (CWE-863) that allows Forceful Browsing. Versions from 0.0.0 before 6.2.12 and from 6.3.0 before 6.3.1 are affected. An unauthenticated remote attacker can reach restricted content over the network, which exposes confidential information with low impact on confidentiality and no impact on integrity or availability (CVSS 3.1 base score 5.3, MEDIUM). CISA has no record of exploitation in the wild.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Incorrect Authorization vulnerability in Drupal Webform allows Forceful Browsing. This issue affects Webform versions: from 0.0.0 to 6.2.12, from 6.3.0 to 6.3.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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
Update Webform to 6.2.12 or 6.3.1, depending on the branch in use. Drupal publishes the fix under SA-CONTRIB-2026-169.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA Webform (Drupal) Fixed in 6.2.12, 6.3.1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Drupal Webform 6.2.12, 6.3.1
20 records Highest priority Priority MEDIUM 1 MEDIUM, 19 LOW
Other records, highest priority first
- TI-2026-79103 Template injection in Drupal Webform allows remote code executionPriority MEDIUM 48
- TI-2026-79113 Unbounded allocation in Drupal Webform allows denial of servicePriority LOW 39
- TI-2026-79112 Improper interaction frequency control in Drupal WebformPriority LOW 30
Timeline
- 2026-10-22 Threatist record created from CVE-2026-96366
- 2026-10-22 Alias added: GHSA-2mhr-gxgf-94fj
- 2026-10-22 CVSS score added · CISA ADP
- 2026-10-22 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-2026-96366 · CVE Program
- CVE-2026-96366 · NVD
- FIRST EPSS
- GHSA-2mhr-gxgf-94fj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences