CVE-2026-115935

Published: Ott 24, 2026 Last Modified: Ott 24, 2026

ExploitDB:

Other exploit source:

Google Dorks:

HIGH 8,7

Source: 7004884b-51e2-48e8-b4a2-5ca29e80453e

Attack Vector: network

Attack Complexity: low

Privileges Required: low

User Interaction: none

Confidentiality: N/A

Integrity: N/A

Availability: N/A

HIGH 8,8

Source: 7004884b-51e2-48e8-b4a2-5ca29e80453e

Attack Vector: network

Attack Complexity: low

Privileges Required: low

User Interaction: none

Scope: unchanged

Confidentiality: high

Integrity: high

Availability: high

Description

The app/process-api-response-headers action accepts fake Craft API response headers from any authenticated control panel user.

A non-admin user with only accessCp can place newline characters in X-Craft-Plugin-Licenses. Craft passes this value to its .env writer without removing the newlines.

This lets the user insert a new attacker-known CRAFT_SECURITY_KEY into .env. After Craft loads that key, the user can forge a signed login redirect containing a Twig system() callback.

This is different from the previous report. That report reads the existing key through a Twig sandbox bypass. This report replaces the key through fake API headers and CRLF injection. Fixing either source does not fix the other.