# CVE-2026-47767: symfony: Symfony is a PHP framework for web and console applications and a set of reusable PHP components

CVE-2026-47767 is fixed in symfony on 1 platform, first by DEBIAN-CVE-2026-47767, released July 18, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-47767
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0072
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 14, 2026

## Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 5.4.46 until 5.4.52, 6.4.40, 7.4.12, and 8.0.12, the CVE-2024-50340 fix gated runtime argv parsing on empty($_GET), but parse_str() and the web SAPI can disagree, allowing a crafted query string to leave $_GET empty while $_SERVER['argv'] still carries attacker-controlled --env or --no-debug flags that change APP_ENV or APP_DEBUG. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | symfony Debian 12.15 (bookworm) | 5.4.52+dfsg-0+deb12u1 | [DEBIAN-CVE-2026-47767](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47767.md) | Jul 18, 2026 |
| Linux | symfony Debian 13.5 (trixie) | 6.4.41+dfsg-0+deb13u1 | [DEBIAN-CVE-2026-47767](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47767.md) | Jul 18, 2026 |
| Linux | symfony Debian 14 | 7.4.12+dfsg-1 | [DEBIAN-CVE-2026-47767](https://patchblox.com/security/data/fix/linux/debian-cve-2026-47767.md) | Jul 18, 2026 |

---

Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.