CVE-2026-115935 (GCVE-0-2026-115935)

Vulnerability from cvelistv5 – Published: 2026-10-23 21:40 – Updated: 2026-10-23 21:40
VLAI
Title
Control panel only API response emulation replaces "securityKey" and reaches server RCE
Summary
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.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
Hackrate CNA under the icscert root
CNA scorecard B 87/100 over 10 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
craftcms cms Affected: 5.0.0 , < 5.11.2 (semver)
Affected: 4.0.0 , < 4.18.9 (semver)
    cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*
    cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Mohamed Wagdy (@Kalawy) Hackrate
Show details on NVD website
To clipboard 

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            "technical-description",
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          "url": "https://www.hckrt.com/hacktivity/HCKRT-WM3VSE"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://github.com/craftcms/cms/releases/tag/5.11.2"
        },
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          "tags": [
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          "url": "https://github.com/craftcms/cms"
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    "datePublished": "2026-10-23T21:40:57.592Z",
    "dateReserved": "2026-10-23T21:23:18.607Z",
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    "state": "PUBLISHED"
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}



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