High 8.3Published Jul 14, 2026

CVE-2026-47767Symfony: SymfonyRuntime CVE-2024-50340 Patch Bypass: Web Requests Can Still Set APP_ENV/APP_DEBUG via parse_str/SAPI Argv Mismatch

Updated under an hour ago (Oct 27, 2026, 4:00 AM ET)

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Every CVE for symfony

Exploited in the last 30 days

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.

CVSS: 8.3 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-436
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Jul 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

symfony symfony symfony:symfony (from the name)	from 5.4.46, < 5.4.52; from 6.4.14, < 6.4.40; from 7.1.7, < 7.4.12; from 8.0.0-BETA1, < 8.0.12	CNA record
symfony runtime symfony:runtime (from the name)	from 5.4.46, < 5.4.52; from 6.4.14, < 6.4.40; from 7.1.7, < 7.4.12; from 8.0.0-BETA1, < 8.0.12	CNA record
sensiolabs symfony sensiolabs:symfony	from 5.4.46 before 5.4.52; from 6.4.14 before 6.4.40; from 7.1.7 before 7.4.12; from 8.0.0 before 8.0.12	NVD

References

References

https://github.com/symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3	x-refsource-confirm, not-applicable
https://github.com/symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25	x-refsource-misc, patch
https://github.com/symfony/symfony/releases/tag/v5.4.52	x-refsource-misc, product, release-notes
https://github.com/symfony/symfony/releases/tag/v6.4.40	x-refsource-misc, product, release-notes
https://github.com/symfony/symfony/releases/tag/v7.4.12	x-refsource-misc, product, release-notes
https://github.com/symfony/symfony/releases/tag/v8.0.12	x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.