GHSA-C2P3-7M5P-CV8X Symfony hardened the parser when handling untrusted input

Description Symfony\Component\Yaml\Parser is the entry point for parsing YAML strings into PHP values via Yaml::parse. When the parser is exposed to attacker-controlled input, deeply nested mappings or sequences cause both the block-level Parser::parseBlock and inline Inline::parseSequence /...

PT-2026-44149

Name of the Vulnerable Software and Affected Versions Symfony versions prior to 5.4 Description The SymfonyComponentYamlParser resolves YAML aliases during parsing. Aliases referencing collections, such as arrays, stdClass, or TaggedValue-wrapped collections, can point to other collections...

libxml2: Out-of-bounds read via a document that ends abruptly

parser.c in libxml2 before 2.9.0, as used in Google Chrome before 28.0.1500.71 and other products, allows remote attackers to cause a denial of service out-of-bounds read via a document that ends abruptly, related to the lack of certain checks for the XMLPARSEREOF state...