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CVE-2026-47767

42
FAUCET Score

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.

First published: Jul 14, 2026Last modified: Jul 14, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.4.46, < 5.4.52CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 6.4.14, < 6.4.40CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 7.1.7, < 7.4.12CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*
>= 8.0.0, < 8.0.12CPE matchmatch criteria
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.3HIGH

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 8th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (9)

composerpatch availablevia ghsa
Product: symfony/runtimeFixed in: 5.4.52
composerpatch availablevia ghsa
Product: symfony/runtimeFixed in: 6.4.40
composerpatch availablevia ghsa
Product: symfony/runtimeFixed in: 7.4.12
composerpatch availablevia ghsa
Product: symfony/runtimeFixed in: 8.0.12
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 5.4.52
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 6.4.40
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 7.4.12
composerpatch availablevia ghsa
Product: symfony/symfonyFixed in: 8.0.12
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-fqc7-9xjw-jrh3medium

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

Jun 9, 2026

References

github.com / symfony/symfony/commit/3228c3806ee511008bea19a95084d460b17e5d25
Patch
github.com / symfony/symfony/releases/tag/v5.4.52
ProductRelease Notes
github.com / symfony/symfony/releases/tag/v6.4.40
ProductRelease Notes
github.com / symfony/symfony/releases/tag/v7.4.12
ProductRelease Notes
github.com / symfony/symfony/releases/tag/v8.0.12
ProductRelease Notes
github.com / symfony/symfony/security/advisories/GHSA-fqc7-9xjw-jrh3
Not Applicable