CVE-2026-45304
2 advisories.
Packagist/symfony/yaml CVE-2026-45304: low
Symfony's YAML Parser Vulnerable to Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs")
Action: Upgrade symfony/yaml to 5.4.52 or later.
composer require symfony/yaml:5.4.52composer require symfony/yaml:6.4.40composer require symfony/yaml:7.4.12composer require symfony/yaml:8.0.12Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.4.52 | - |
| 6.0.0 | 6.4.40 | - |
| 7.0.0 | 7.4.12 | - |
| 8.0.0 | 8.0.12 | - |
Fixed versions
| 5.4.52 | 6.4.40 | 7.4.12 | 8.0.12 |
Sources
- osv: GHSA-4qpc-3hr4-r2p4
- https://github.com/symfony/symfony/security/advisories/GHSA-4qpc-3hr4-r2p4
- https://github.com/symfony/symfony/commit/e77391b2e4f18821198f010d573674c8ed4a970a
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45304.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/yaml/CVE-2026-45304.yaml
- https://github.com/symfony/symfony
- https://symfony.com/cve-2026-45304
CVE-2026-45304 · published · modified · JSON
Packagist/symfony/symfony CVE-2026-45304: low
Symfony's YAML Parser Vulnerable to Exponential Memory Allocation via Recursive Collection-Alias Expansion ("Billion Laughs")
Action: Upgrade symfony/symfony to 5.4.52 or later.
composer require symfony/symfony:5.4.52composer require symfony/symfony:6.4.40composer require symfony/symfony:7.4.12composer require symfony/symfony:8.0.12Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.4.52 | - |
| 6.0.0 | 6.4.40 | - |
| 7.0.0 | 7.4.12 | - |
| 8.0.0 | 8.0.12 | - |
Fixed versions
| 5.4.52 | 6.4.40 | 7.4.12 | 8.0.12 |
Sources
- osv: GHSA-4qpc-3hr4-r2p4#Packagist/symfony/symfony
- https://github.com/symfony/symfony/security/advisories/GHSA-4qpc-3hr4-r2p4
- https://github.com/symfony/symfony/commit/e77391b2e4f18821198f010d573674c8ed4a970a
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45304.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/yaml/CVE-2026-45304.yaml
- https://github.com/symfony/symfony
- https://symfony.com/cve-2026-45304
CVE-2026-45304 · published · modified · JSON