- Latest release
- Not known: cve.now hasn't read this package's releases
- Newest unaffected release
- Not known without release data
- Advisories
- 7 · 5 high
- Registry
- Packagist
Advisories 7
- CVE-2026-123792High 8.7
Symfony: Exponential and Quadratic Parse Times in the YAML Parser Let a Single Document Hold a Process
Affected: fixed in 5.4.56; from 6.0.0, fixed in 6.4.50; from 7.0.0, fixed in 7.4.23; from 8.0.0, fixed in 8.1.11.
- CVE-2026-109413High 8.7
Symfony: Unbounded Recursion in the YAML Inline Lexer Lets a Single Document Crash the Process
Affected: from 2.0.0, fixed in 5.4.54; from 6.0.0, fixed in 6.4.45; from 7.0.0, fixed in 7.4.18; from 8.0.0, fixed in 8.1.6.
- CVE-2026-45305High 8.7
Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex
Affected: fixed in 5.4.52; from 6.0.0, fixed in 6.4.40; from 7.0.0, fixed in 7.4.12; from 8.0.0, fixed in 8.0.12.
- CVE-2026-45304High 8.7
Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs")
Affected: fixed in 5.4.52; from 6.0.0, fixed in 6.4.40; from 7.0.0, fixed in 7.4.12; from 8.0.0, fixed in 8.0.12.
- CVE-2026-45133High 8.2
Symfony: [Yaml] Harden the parser when handling untrusted input
Affected: fixed in 5.4.52; from 6.0.0, fixed in 6.4.40; from 7.0.0, fixed in 7.4.12; from 8.0.0, fixed in 8.0.12.
- CVE-2013-1397Unrated
Symfony 2.0.x before 2.0.22, 2.1.x before 2.1.7, and 2.2.x remote attackers to execute arbitrary PHP code via a serialized PHP object to…
Affected: from 2.0.0, fixed in 2.0.22; from 2.1.0, fixed in 2.1.7; from 2.2.0-BETA1, fixed in 2.2.0-BETA2.
- CVE-2013-1348Unrated
The Yaml::parse function in Symfony 2.0.x before 2.0.22 remote attackers to execute arbitrary PHP code via a PHP file, a different…
Affected: from 2.0.0, fixed in 2.0.22.