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::cleanup() used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup, allowing crafted input to make parsing hang for an arbitrarily long time. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Metrics
Affected Vendors & Products
References
History
Mon, 27 Jul 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Symfony
Symfony symfony Symfony yaml |
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| Vendors & Products |
Symfony
Symfony symfony Symfony yaml |
Wed, 15 Jul 2026 14:30:00 +0000
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| Metrics |
ssvc
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Tue, 14 Jul 2026 19:00:00 +0000
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| 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::cleanup() used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup, allowing crafted input to make parsing hang for an arbitrarily long time. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12. | |
| Title | Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex | |
| Weaknesses | CWE-1333 | |
| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-15T14:03:58.116Z
Reserved: 2026-05-11T20:14:43.202Z
Link: CVE-2026-45305
Updated: 2026-07-15T14:03:54.863Z
Status : Analyzed
Published: 2026-07-14T19:17:07.187
Modified: 2026-07-15T14:57:02.810
Link: CVE-2026-45305
No data.
OpenCVE Enrichment
Updated: 2026-07-31T05:45:03Z