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SUSE Linux Python314 Major Header Injection Risks SUSE-SU-2026-20584-1

suse
Calendar Grey March 5, 2026
Dist Suse Esm H88
An important security update for SUSE's Python 313 addresses five critical issues involving header injection vulnerabilities.
An update that solves five vulnerabilities can now be installed.

Summary

## This update for python313 fixes the following issues: Update to version 3.13.12. Security issues fixed: * CVE-2025-11468: header injection when folding a long comment in an email header containing exclusively unfoldable characters (bsc#1257029). * CVE-2025-15282: user-controlled data URLs parsed may allow injecting headers (bsc#1257046). * CVE-2026-0672: HTTP header injection via user-controlled cookie values and parameters when using http.cookies.Morsel (bsc#1257031). * CVE-2026-0865: user-controlled header containing newlines can allow injecting HTTP headers (bsc#1257042). * CVE-2026-1299: header injection when an email is serialized due to improper newline quoting in `BytesGenerator` (bsc#1257181). Other updates and bugfixes: * Update to version 3.13.12. * Library

Topics%20covered

Topics Covered

security advisory security issue SuSE important header injection python313

References

* bsc#1257029

* bsc#1257031

* bsc#1257042

* bsc#1257046

* bsc#1257181

Cross-

* CVE-2025-11468

* CVE-2025-15282

* CVE-2026-0672

* CVE-2026-0865

* CVE-2026-1299

CVSS scores:

* CVE-2025-11468 ( SUSE ): 7.1

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

* CVE-2025-11468 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

* CVE-2025-11468 ( NVD ): 5.7

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:H/VA:N/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

* CVE-2025-15282 ( SUSE ): 5.9

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2025-15282 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

* CVE-2025-15282 ( NVD ): 6.0

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20581-1
Release Date: 2026-02-19T10:31:04Z
Rating: important

Topics%20covered

Topics Covered

security advisory security issue SuSE important header injection python313

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