CVE-2025-4516

Name
CVE-2025-4516
Description
There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an error handler your usage is not affected. To work-around this issue you may stop using the error= handler and instead wrap the bytes.decode() call in a try-except catching the DecodeError.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
patch https://github.com/python/cpython/commit/69b4387f78f413e8c47572a85b3478c47eba8142
patch https://github.com/python/cpython/commit/9f69a58623bd01349a18ba0c7a9cb1dad6a51e8e
issue-tracking https://github.com/python/cpython/issues/133767
patch https://github.com/python/cpython/pull/129648
vendor-advisory https://mail.python.org/archives/list/security-announce@python.org/thread/L75IPBBTSCYEF56I2M4KIW353BB3AY74/
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/05/16/4
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/05/19/1
cna@python.org https://github.com/python/cpython/commit/4398b788ffc1f954a2c552da285477d42a571292
cna@python.org https://github.com/python/cpython/commit/6279eb8c076d89d3739a6edb393e43c7929b429d
cna@python.org https://github.com/python/cpython/commit/73b3040f592436385007918887b7e2132aa8431f
cna@python.org https://github.com/python/cpython/commit/8d35fd1b34935221aff23a1ab69a429dd156be77
cna@python.org https://github.com/python/cpython/commit/ab9893c40609935e0d40a6d2a7307ea51aec598b

Match rules

CPE URI Source package Min version Max version
cpython >= 0 < 3.14.0b1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
python3 edge-main 3.12.10-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
python3 3.22-main 3.12.10-r1 None fixed
python3 3.21-main 3.12.10-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
python3 3.20-main 3.12.10-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
python3 3.19-main 3.11.12-r1 Natanael Copa <ncopa@alpinelinux.org> fixed
python3 3.18-main 3.11.12-r1 Natanael Copa <ncopa@alpinelinux.org> fixed