CVEvulnerability

CVE-2026-45304

8.7 HIGH Published 2026-07-14 Modified 2026-07-15 Official page ↗
Status
Analyzed
Published
2026-07-14
Last modified
2026-07-15
Assigner
[email protected]
CVSS 4.0 ([email protected])
8.7 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-776

Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser resolved YAML collection aliases recursively, allowing a small untrusted YAML input to expand into a multi-gigabyte structure and exhaust memory. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.

Affected configurations

• sensiolabs symfony (< 5.4.52) • sensiolabs symfony (>= 6.0.0 < 6.4.40) • sensiolabs symfony (>= 7.0.0 < 7.4.12) • sensiolabs symfony (>= 8.0.0 < 8.0.12)

Related

Weakness · CWE (1)

  • CWE-776 Improper Restriction of Recursive Entity References in DTDs weakness

References