CVE-2026-45070

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Mime\Header\ParameterizedHeader validates and encodes parameter values but emits parameter names verbatim, allowing a caller that derives a parameter name from untrusted input to include CRLF or other non-token bytes and inject additional headers into rendered structured mail headers such as Content-Type or Content-Disposition. This issue is reported as fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

History

15 Jul 2026, 14:50

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 6.5
References () https://github.com/symfony/symfony/commit/e62ea217f8b4ca8ae922ad0f949e0c4dc1f9b613 - () https://github.com/symfony/symfony/commit/e62ea217f8b4ca8ae922ad0f949e0c4dc1f9b613 - Patch
References () https://github.com/symfony/symfony/releases/tag/v5.4.52 - () https://github.com/symfony/symfony/releases/tag/v5.4.52 - Product, Release Notes
References () https://github.com/symfony/symfony/releases/tag/v6.4.40 - () https://github.com/symfony/symfony/releases/tag/v6.4.40 - Product, Release Notes
References () https://github.com/symfony/symfony/releases/tag/v7.4.12 - () https://github.com/symfony/symfony/releases/tag/v7.4.12 - Product, Release Notes
References () https://github.com/symfony/symfony/releases/tag/v8.0.12 - () https://github.com/symfony/symfony/releases/tag/v8.0.12 - Product, Release Notes
References () https://github.com/symfony/symfony/security/advisories/GHSA-vqc8-7275-q272 - () https://github.com/symfony/symfony/security/advisories/GHSA-vqc8-7275-q272 - Patch, Vendor Advisory
First Time Sensiolabs symfony
Sensiolabs
CPE cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

14 Jul 2026, 19:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-07-14 19:17

Updated : 2026-07-16 15:16


NVD link : CVE-2026-45070

Mitre link : CVE-2026-45070

CVE.ORG link : CVE-2026-45070


JSON object : View

Products Affected

sensiolabs

  • symfony
CWE
CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')