{"schemaVersion":3,"id":"CVE-2026-45304","aliases":["UBUNTU-CVE-2026-45304","DEBIAN-CVE-2026-45304","CGA-35xw-r7mm-9x8g","CGA-f532-9h6j-9678","CGA-hmhv-2fc7-3f9q","CGA-wwx3-x8p2-h9c3"],"status":"published","duplicateOf":null,"title":null,"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. 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