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Title: Upgrade bundled Expat to 2.8.0 (e.g. for the fix to CVE-2026-41080) · Issue #149017 · python/cpython · GitHub

Open Graph Title: Upgrade bundled Expat to 2.8.0 (e.g. for the fix to CVE-2026-41080) · Issue #149017 · python/cpython

X Title: Upgrade bundled Expat to 2.8.0 (e.g. for the fix to CVE-2026-41080) · Issue #149017 · python/cpython

Description: Please see blog post https://blog.hartwork.org/posts/expat-2-8-0-released/ for an overview and the change log at https://github.com/libexpat/libexpat/blob/R_2_8_0/expat/Changes for details. Affects all alive branches of Python. Thank you...

Open Graph Description: Please see blog post https://blog.hartwork.org/posts/expat-2-8-0-released/ for an overview and the change log at https://github.com/libexpat/libexpat/blob/R_2_8_0/expat/Changes for details. Affects...

X Description: Please see blog post https://blog.hartwork.org/posts/expat-2-8-0-released/ for an overview and the change log at https://github.com/libexpat/libexpat/blob/R_2_8_0/expat/Changes for details. Affects...

Opengraph URL: https://github.com/python/cpython/issues/149017

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Upgrade bundled Expat to 2.8.0 (e.g. for the fix to CVE-2026-41080)https://github.com/python/cpython/issues/149017#top
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3.10only security fixeshttps://github.com/python/cpython/issues?q=state%3Aopen%20label%3A%223.10%22
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on Apr 26, 2026https://github.com/python/cpython/issues/149017#issue-4331366450
https://blog.hartwork.org/posts/expat-2-8-0-released/https://blog.hartwork.org/posts/expat-2-8-0-released/
https://github.com/libexpat/libexpat/blob/R_2_8_0/expat/Changeshttps://github.com/libexpat/libexpat/blob/R_2_8_0/expat/Changes
#146083https://github.com/python/cpython/issues/146083
gh-149017: Upgrade bundled Expat to 2.8.0 #149020https://github.com/python/cpython/pull/149020
[3.14] gh-149017: Upgrade bundled Expat to 2.8.0 (GH-149020) #149073https://github.com/python/cpython/pull/149073
[3.11] gh-149017: Upgrade bundled Expat to 2.8.0 (GH-149020) #149074https://github.com/python/cpython/pull/149074
[3.10] gh-149017: Upgrade bundled Expat to 2.8.0 (#149020) #149075https://github.com/python/cpython/pull/149075
[3.13] gh-149017: Upgrade bundled Expat to 2.8.0 (GH-149020) (GH-149073) #149099https://github.com/python/cpython/pull/149099
[3.12] gh-149017: Upgrade bundled Expat to 2.8.0 (GH-149020) (GH-149073) #150007https://github.com/python/cpython/pull/150007
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