CVE-2026-4224mediumCWE-674

Stack overflow parsing XML with deeply nested DTD content models

13Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 6epss 0.6%

probabilidade de exploração

0.6%top 53% das CVEs

exploração observada

nãonenhuma fonte reporta

When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Produtos afetados

Python Software Foundation · CPython

Referências

https://github.com/python/cpython/commit/196edfb06a7458377d4d0f4b3cd41724c1f3bd4a https://github.com/python/cpython/commit/24ce88b285f56ee11626cf5e472af3cd8cc7c621 https://github.com/python/cpython/commit/642865ddf4b232da1f3b1f7abcfa3254c4bfe785 https://github.com/python/cpython/commit/af856a7177326ac25d9f66cc6dd28b554d914fee https://github.com/python/cpython/commit/e0a8a6da90597a924b300debe045cdb4628ee1f3 https://github.com/python/cpython/commit/eb0e8be3a7e11b87d198a2c3af1ed0eccf532768 https://github.com/python/cpython/issues/145986 https://github.com/python/cpython/pull/145987 https://mail.python.org/archives/list/security-announce@python.org/thread/5M7CGUW3XBRY7II4DK43KF7NQQ3TPZ6R/http://www.openwall.com/lists/oss-security/2026/03/16/4