Untriaged
Stack overflow parsing XML with deeply nested DTD content models
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.
References
- https://github.com/python/cpython/commit/eb0e8be3a7e11b87d198a2c3af1ed0eccf5327… patch
- https://mail.python.org/archives/list/security-announce@python.org/thread/5M7CG… vendor-advisory
- https://github.com/python/cpython/issues/145986 issue-tracking
- https://github.com/python/cpython/pull/145987 patch
- https://github.com/python/cpython/commit/196edfb06a7458377d4d0f4b3cd41724c1f3bd… patch
- https://github.com/python/cpython/commit/e0a8a6da90597a924b300debe045cdb4628ee1… patch
- http://www.openwall.com/lists/oss-security/2026/03/16/4
Affected products
CPython
- <3.15.0
Package maintainers
-
@sheepforce Phillip Seeber <phillip.seeber@googlemail.com>