CVE-2026-4786

N/A

Description

Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.

CVE Details

CVSS v3.1 ScoreN/A

Published4/13/2026

Last Modified4/17/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-77

References

https://github.com/python/cpython/commit/c5767a72838a8dda9d6dc5d3558075b055c56bca(cna@python.org)

https://github.com/python/cpython/commit/d22922c8a7958353689dc4763dd72da2dea03fff(cna@python.org)

https://github.com/python/cpython/commit/f4654824ae0850ac87227fb270f9057477946769(cna@python.org)

https://github.com/python/cpython/issues/148169(cna@python.org)

https://github.com/python/cpython/pull/148170(cna@python.org)

https://mail.python.org/archives/list/security-announce@python.org/thread/JQDUNJVB4AQNTJECSUKOBDU3XCJIPSE5/(cna@python.org)

IOC Correlations

No correlations recorded

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