BIT-python-2025-4516
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/python/BIT-python-2025-4516.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/BIT-python-2025-4516
- Aliases
- Published
- 2025-05-20T07:36:42.602Z
- Modified
- 2025-06-04T15:15:46.482Z
- Summary
- Use-after-free in "unicode_escape" decoder with error handler
- Details
-
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. - Database specific
{ "cpes": [ "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*" ], "severity": "Medium" }- References
-
- http://www.openwall.com/lists/oss-security/2025/05/16/4
- http://www.openwall.com/lists/oss-security/2025/05/19/1
- https://github.com/python/cpython/commit/69b4387f78f413e8c47572a85b3478c47eba8142
- https://github.com/python/cpython/commit/9f69a58623bd01349a18ba0c7a9cb1dad6a51e8e
- https://github.com/python/cpython/issues/133767
- https://github.com/python/cpython/pull/129648
- https://mail.python.org/archives/list/security-announce@python.org/thread/L75IPBBTSCYEF56I2M4KIW353BB3AY74/
- https://nvd.nist.gov/vuln/detail/CVE-2025-4516
- https://github.com/python/cpython/commit/4398b788ffc1f954a2c552da285477d42a571292
- https://github.com/python/cpython/commit/6279eb8c076d89d3739a6edb393e43c7929b429d
- https://github.com/python/cpython/commit/73b3040f592436385007918887b7e2132aa8431f
- https://github.com/python/cpython/commit/8d35fd1b34935221aff23a1ab69a429dd156be77
- https://github.com/python/cpython/commit/ab9893c40609935e0d40a6d2a7307ea51aec598b
Affected packages
Bitnami / python
Package
- Name
- python
- Purl
- pkg:bitnami/python
Severity
- 5.9 (Medium) CVSS_V4 - 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator