Medium severityNVD Advisory· Published Mar 16, 2026· Updated Apr 8, 2026
CVE-2026-4224
CVE-2026-4224
Description
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
9- www.openwall.com/lists/oss-security/2026/03/16/4nvd
- github.com/python/cpython/commit/196edfb06a7458377d4d0f4b3cd41724c1f3bd4anvd
- github.com/python/cpython/commit/642865ddf4b232da1f3b1f7abcfa3254c4bfe785nvd
- github.com/python/cpython/commit/af856a7177326ac25d9f66cc6dd28b554d914feenvd
- github.com/python/cpython/commit/e0a8a6da90597a924b300debe045cdb4628ee1f3nvd
- github.com/python/cpython/commit/eb0e8be3a7e11b87d198a2c3af1ed0eccf532768nvd
- github.com/python/cpython/issues/145986nvd
- github.com/python/cpython/pull/145987nvd
- mail.python.org/archives/list/security-announce@python.org/thread/5M7CGUW3XBRY7II4DK43KF7NQQ3TPZ6R/nvd
News mentions
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