All vulnerabilities

Servers and applications

GHSA-hwfg-qwvh-2wfx

Exponential and Quadratic Parse Times in the YAML Parser Let a Single Document Hold a Process

Severity
High 8.7
Published
4 Nov 2026
Last changed
4 Nov 2026
Added to UpHeron
4 Nov 2026
Fixed in
5.4.56, 6.4.50, 7.4.23, 8.1.11
Sources
Project advisories (GitHub)

Affected software

SoftwareAffected versions
SymfonyServers and applications · github:symfony/symfony
  • Every version before 5.4.56
  • From 6.0.0 before 6.4.50
  • From 7.0.0 before 7.4.23
  • From 8.0.0 before 8.1.11

References