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TI-2026-35264 Aliases CVE-2026-47767GHSA-fqc7-9xjw-jrh3

Improper input validation in symfony

Priority MEDIUM 45CWE-436Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00721 54th percentileScored 2026-11-07
Fix Fixed symfony (symfony): 5.4.52, 6.4.40, 7.4.12 +1runtime (symfony): 5.4.52, 6.4.40, 7.4.12 +1+2 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
symfonysymfony5.4.46 to before 5.4.52; 6.4.14 to before 6.4.40; 7.1.7 to before 7.4.12; 8.0.0-BETA1 to before 8.0.125.4.52, 6.4.40, 7.4.12, 8.0.12Patch availableCNA
symfonyruntime5.4.46 to before 5.4.52; 6.4.14 to before 6.4.40; 7.1.7 to before 7.4.12; 8.0.0-BETA1 to before 8.0.125.4.52, 6.4.40, 7.4.12, 8.0.12Patch availableCNA
—symfony/runtime (Packagist)5.4.46 to before 5.4.525.4.52Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/runtime (Packagist)6.4.14 to before 6.4.406.4.40Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/runtime (Packagist)7.1.7 to before 7.4.127.4.12Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/runtime (Packagist)8.0.0 to before 8.0.128.0.12Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/symfony (Packagist)5.4.46 to before 5.4.525.4.52Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/symfony (Packagist)6.4.14 to before 6.4.406.4.40Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/symfony (Packagist)7.1.7 to before 7.4.127.4.12Patch availableGHSA-fqc7-9xjw-jrh3
—symfony/symfony (Packagist)8.0.0 to before 8.0.128.0.12Patch availableGHSA-fqc7-9xjw-jrh3
  • symfony Vendorsymfony Affected 5.4.46 to before 5.4.52; 6.4.14 to before 6.4.40; 7.1.7 to before 7.4.12; 8.0.0-BETA1 to before 8.0.12 Fixed in 5.4.52, 6.4.40, 7.4.12, 8.0.12 Patch available CNA
  • runtime Vendorsymfony Affected 5.4.46 to before 5.4.52; 6.4.14 to before 6.4.40; 7.1.7 to before 7.4.12; 8.0.0-BETA1 to before 8.0.12 Fixed in 5.4.52, 6.4.40, 7.4.12, 8.0.12 Patch available CNA
  • symfony/runtime (Packagist) Vendor— Affected 5.4.46 to before 5.4.52 Fixed in 5.4.52 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/runtime (Packagist) Vendor— Affected 6.4.14 to before 6.4.40 Fixed in 6.4.40 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/runtime (Packagist) Vendor— Affected 7.1.7 to before 7.4.12 Fixed in 7.4.12 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/runtime (Packagist) Vendor— Affected 8.0.0 to before 8.0.12 Fixed in 8.0.12 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/symfony (Packagist) Vendor— Affected 5.4.46 to before 5.4.52 Fixed in 5.4.52 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/symfony (Packagist) Vendor— Affected 6.4.14 to before 6.4.40 Fixed in 6.4.40 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/symfony (Packagist) Vendor— Affected 7.1.7 to before 7.4.12 Fixed in 7.4.12 Patch available GHSA-fqc7-9xjw-jrh3
  • symfony/symfony (Packagist) Vendor— Affected 8.0.0 to before 8.0.12 Fixed in 8.0.12 Patch available GHSA-fqc7-9xjw-jrh3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*5.4.46 to before 5.4.52; 6.4.14 to before 6.4.40; 7.1.7 to before 7.4.12; 8.0.0 to before 8.0.12Vulnerablesensiolabs
  • cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* Versions 5.4.46 to before 5.4.52; 6.4.14 to before 6.4.40; 7.1.7 to before 7.4.12; 8.0.0 to before 8.0.12 Vulnerable ·sensiolabs

Remediation

  • Fix · CNA symfony (symfony) Fixed in 5.4.52, 6.4.40, 7.4.12, 8.0.12
  • Fix · CNA runtime (symfony) Fixed in 5.4.52, 6.4.40, 7.4.12, 8.0.12
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/runtime (Packagist) Fixed in 5.4.52 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/runtime (Packagist) Fixed in 6.4.40 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/runtime (Packagist) Fixed in 7.4.12 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/runtime (Packagist) Fixed in 8.0.12 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/symfony (Packagist) Fixed in 5.4.52 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/symfony (Packagist) Fixed in 6.4.40 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/symfony (Packagist) Fixed in 7.4.12 Advisory →
  • Fix · GHSA-fqc7-9xjw-jrh3 symfony/symfony (Packagist) Fixed in 8.0.12 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47767
  2. 2026-10-03 Alias added: GHSA-fqc7-9xjw-jrh3

References

Patch 1

Other 6

  • TI-2024-33775 Ability to change environment from query in symfony/runtime CVSS 3.1HIGH 7.3
  • TI-2026-34283 Twig: The `spaceless` filter implicitly marks its output as safe CVSS 4.0MEDIUM 5.1
  • TI-2022-07667 Code injection in Twig CVSS 3.1CRITICAL 9.8
  • TI-2018-10028 Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key… CVSS 3.0CRITICAL 9.8
  • TI-2026-35851 Incorrect authorization in symfony CVSS 4.0HIGH 8.7
  • TI-2026-33105 Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex CVSS 4.0HIGH 8.7
See all 94 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences