[3.14] gh-148169: Fix webbrowser %action substitution bypass of dash-prefix check (GH-148170)#148516
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miss-islington wants to merge 1 commit intopython:3.14from
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[3.14] gh-148169: Fix webbrowser %action substitution bypass of dash-prefix check (GH-148170)#148516miss-islington wants to merge 1 commit intopython:3.14from
%action substitution bypass of dash-prefix check (GH-148170)#148516miss-islington wants to merge 1 commit intopython:3.14from
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…-prefix check (pythonGH-148170) (cherry picked from commit d22922c8a7958353689dc4763dd72da2dea03fff) Co-authored-by: Stan Ulbrych <stan@python.org>
This was referenced Apr 13, 2026
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Cherry-pick fix to resolve Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open() Obtained from: python/cpython#148516 Security: CVE-2026-4786 Security: cf75f572-378a-11f1-a119-e36228bfe7d4
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(cherry picked from commit d22922c)
Co-authored-by: Stan Ulbrych stan@python.org
webbrowser:%actionsubstitution can bypass the dash-prefix check #148169