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Django 4.0.9 release notes¶
February 1, 2023
Django 4.0.9 fixes a security issue with severity “moderate” in 4.0.8.
CVE-2023-23969: Potential denial-of-service via
The parsed values of
Accept-Language headers are cached in order to avoid
repetitive parsing. This leads to a potential denial-of-service vector via
excessive memory usage if large header values are sent.
In order to avoid this vulnerability, the
Accept-Language header is now
parsed up to a maximum length.