RHSA-2026:6253 Red Hat Security Advisory: python3.11 security update
Details
CVSS v3
7.1
CVSS v4
6.0
NVD published
2026-01-23 17:16:12
EPSS
<0.1% probability · 11.4th percentile — 2026-03-31
Affected versions
Not available in our cache.
Summary
The
email module, specifically the "BytesGenerator" class, didn’t properly quote newlines for email headers when
serializing an email message allowing for header injection when an email
is serialized. This is only applicable if using "LiteralHeader" writing headers that don't respect email folding rules, the new behavior will reject the incorrectly folded headers in "BytesGenerator".
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