[3.13] gh-145986: Avoid unbound C recursion in conv_content_model in pyexpat.c (CVE 2026-4224) (GH-145987)#145996
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kumaraditya303 merged 3 commits intopython:3.13from Mar 16, 2026
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… `pyexpat.c` (CVE 2026-4224) (pythonGH-145987) Fix C stack overflow (CVE-2026-4224) when an Expat parser with a registered `ElementDeclHandler` parses inline DTD containing deeply nested content model. --------- (cherry picked from commit eb0e8be) Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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@StanFromIreland In 3.13, we don't have the |
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🤖 New build scheduled with the buildbot fleet by @picnixz for commit 54309bf 🤖 Results will be shown at: https://buildbot.python.org/all/#/grid?branch=refs%2Fpull%2F145996%2Fmerge If you want to schedule another build, you need to add the 🔨 test-with-buildbots label again. |
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Since we are removing the decorators I'm checking that the build bots are green. You can do the same for the other backports, TiA! |
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Fix C stack overflow (CVE-2026-4224) when an Expat parser
with a registered
ElementDeclHandlerparses inline DTDcontaining deeply nested content model.
(cherry picked from commit eb0e8be)
Co-authored-by: Stan Ulbrych 89152624+StanFromIreland@users.noreply.github.com
Co-authored-by: Bénédikt Tran 10796600+picnixz@users.noreply.github.com
pyexpat.c: Unbounded C recursion inconv_content_modelcauses crash (CVE 2026-4224) #145986