CVE-2025-4516 Information

Description

There is an issue in CPython when using bytes.decode(nicode_escape\ error=\ignore|replace\). If you are not using the �nicode_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.

Reference

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/