CVE-2026-45070
Fixed in a distro release EPSS <1%CVSS 6.3
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.
Products: symfony, symfony mime
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| Packagist | symfony/mime | 5.4.52 |
| Packagist | symfony/mime | 6.4.40 |
| Packagist | symfony/mime | 7.4.12 |
| Packagist | symfony/mime | 8.0.12 |
| Packagist | symfony/symfony | 5.4.52 |
| Packagist | symfony/symfony | 6.4.40 |
| Packagist | symfony/symfony | 7.4.12 |
| Packagist | symfony/symfony | 8.0.12 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | nextcloud-server-31 | no fix |
| Chainguard | nextcloud-server-32 | 32.0.11-r1 |
| Chainguard | nextcloud-server-33 | 33.0.5-r2 |
| Debian:12 | symfony | 5.4.53+dfsg-0+deb12u1 |
| Debian:13 | symfony | 6.4.41+dfsg-0+deb13u1 |
| Debian:14 | symfony | 7.4.12+dfsg-1 |
| Ubuntu:16.04:LTS | symfony | no fix |
| Ubuntu:25.10 | symfony | no fix |
| Ubuntu:26.04:LTS | symfony | no fix |
| Ubuntu:26.10 | symfony | no fix |
| Ubuntu:Pro:18.04:LTS | symfony | no fix |
| Ubuntu:Pro:20.04:LTS | symfony | no fix |
| Ubuntu:Pro:22.04:LTS | symfony | no fix |
| Ubuntu:Pro:24.04:LTS | symfony | no fix |
| Wolfi | nextcloud-server-32 | 32.0.11-r1 |
| Wolfi | nextcloud-server-33 | 33.0.5-r2 |