symfony yaml
2 published vulnerabilities name this product.
As the CNAs write it in their CVE records (vendor and product); the versions are theirs.
| CVE | Vulnerable versions | Title | Severity | Published | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| CVE-2026-45305 | < 5.4.52 ; >= 6.0.0-BETA1, < 6.4.40 ; >= 7.0.0-BETA1, < 7.4.12 ; … | Symfony: YAML Parser ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex | HIGH 8.7 | 0.7 % | ||
| CVE-2026-45304 | < 5.4.52 ; >= 6.0.0-BETA1, < 6.4.40 ; >= 7.0.0-BETA1, < 7.4.12 ; … | Symfony: YAML Parser Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs") | HIGH 8.7 | 0.7 % |