CVE-2025-4516 (GCVE-0-2025-4516)
Vulnerability from cvelistv5
Published
2025-05-15 13:29
Modified
2025-06-03 20:53
Severity ?
5.9 (Medium) - CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
Summary
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.
References
cna@python.orghttps://github.com/python/cpython/commit/4398b788ffc1f954a2c552da285477d42a571292
cna@python.orghttps://github.com/python/cpython/commit/6279eb8c076d89d3739a6edb393e43c7929b429d
cna@python.orghttps://github.com/python/cpython/commit/69b4387f78f413e8c47572a85b3478c47eba8142
cna@python.orghttps://github.com/python/cpython/commit/73b3040f592436385007918887b7e2132aa8431f
cna@python.orghttps://github.com/python/cpython/commit/8d35fd1b34935221aff23a1ab69a429dd156be77
cna@python.orghttps://github.com/python/cpython/commit/9f69a58623bd01349a18ba0c7a9cb1dad6a51e8e
cna@python.orghttps://github.com/python/cpython/commit/ab9893c40609935e0d40a6d2a7307ea51aec598b
cna@python.orghttps://github.com/python/cpython/issues/133767
cna@python.orghttps://github.com/python/cpython/pull/129648
cna@python.orghttps://mail.python.org/archives/list/security-announce@python.org/thread/L75IPBBTSCYEF56I2M4KIW353BB3AY74/
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/05/16/4
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/05/19/1
Impacted products
Vendor Product Version
Python Software Foundation CPython Version: 0
Version: 3.10.0
Version: 3.11.0
Version: 3.12.0
Version: 3.13.0
Version: 3.14.0a1
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