Config injection in Python configparser multiline value handling
CVE-2026-0864 affects Python's standard-library configparser module when it is used to write configuration files containing attacker-controlled multi-line text values that include carriage return (\r) characters. Due to improper handling of carriage returns during serialization, the generated configuration file can be malformed in a way that introduces unintended keys and values. In practice, if an application writes untrusted multi-line input through configparser, an attacker may be able to inject additional configuration directives into the resulting file.
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