Input Validation Flaw in Drupal Reverse Proxy Header Affects User-Controlled Variables
CVE-2025-10929

5.3MEDIUM

Key Information:

Vendor

Drupal
Status
Reverse Proxy Header
Vendor
CVE Published:
29 October 2025

What is CVE-2025-10929?

A significant input validation flaw resides in the Drupal Reverse Proxy Header, which allows attackers to manipulate user-controlled variables. This vulnerability affects all versions of the Reverse Proxy Header prior to 1.1.2, posing risks to applications relying on these components. Proper measures should be implemented to mitigate potential exploitation.

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Deploy the Patch

Affected Version(s)

Reverse Proxy Header 0.0.0 < 1.1.2

References

https://www.drupal.org/sa-contrib-2025-111

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Pierre Rudloff (prudloff)
Bohdan Artemchuk (bohart)
Drew Webber (mcdruid)
Pierre Rudloff (prudloff)
Greg Knaddison (greggles)
Juraj Nemec (poker10)
Pierre Rudloff (prudloff)
JSON
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