Bug 2431367 (CVE-2026-0865) - CVE-2026-0865 cpython: wsgiref.headers.Headers allows header newline injection in Python
Summary: CVE-2026-0865 cpython: wsgiref.headers.Headers allows header newline injectio...
Keywords:
Status: NEW
Alias: CVE-2026-0865
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2431754 2431766 2431813 2431758 2431761 2431781 2431788 2431791 2431793 2431797 2431800 2431802 2431805 2431810 2431818 2431821 2431826 2431830 2431835 2431838 2431842 2431845 2431848
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-01-20 22:01 UTC by OSIDB Bzimport
Modified: 2026-05-20 11:45 UTC (History)
15 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2026:2239 0 None None None 2026-02-09 02:10:39 UTC
Red Hat Product Errata RHBA-2026:2377 0 None None None 2026-02-09 23:44:55 UTC
Red Hat Product Errata RHBA-2026:2666 0 None None None 2026-02-12 15:34:15 UTC
Red Hat Product Errata RHBA-2026:2668 0 None None None 2026-02-12 15:27:08 UTC
Red Hat Product Errata RHSA-2026:18693 0 None None None 2026-05-19 13:01:10 UTC
Red Hat Product Errata RHSA-2026:18957 0 None None None 2026-05-19 13:20:45 UTC
Red Hat Product Errata RHSA-2026:18958 0 None None None 2026-05-19 13:20:25 UTC
Red Hat Product Errata RHSA-2026:19019 0 None None None 2026-05-19 13:02:27 UTC
Red Hat Product Errata RHSA-2026:19176 0 None None None 2026-05-19 17:59:00 UTC
Red Hat Product Errata RHSA-2026:2128 0 None None None 2026-02-05 15:34:31 UTC
Red Hat Product Errata RHSA-2026:4463 0 None None None 2026-03-12 12:28:01 UTC
Red Hat Product Errata RHSA-2026:4473 0 None None None 2026-03-12 13:30:24 UTC
Red Hat Product Errata RHSA-2026:4713 0 None None None 2026-03-17 10:33:31 UTC
Red Hat Product Errata RHSA-2026:6253 0 None None None 2026-03-31 09:03:13 UTC

Description OSIDB Bzimport 2026-01-20 22:01:52 UTC 
User-controlled header names and values containing newlines can allow injecting HTTP headers.
Comment 2 errata-xmlrpc 2026-02-05 15:34:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:2128 https://access.redhat.com/errata/RHSA-2026:2128
Comment 4 errata-xmlrpc 2026-03-12 12:27:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:4463 https://access.redhat.com/errata/RHSA-2026:4463
Comment 5 errata-xmlrpc 2026-03-12 13:30:22 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:4473 https://access.redhat.com/errata/RHSA-2026:4473
Comment 6 errata-xmlrpc 2026-03-17 10:33:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:4713 https://access.redhat.com/errata/RHSA-2026:4713
Comment 7 errata-xmlrpc 2026-03-31 09:03:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Extended Update Support

Via RHSA-2026:6253 https://access.redhat.com/errata/RHSA-2026:6253
Comment 13 errata-xmlrpc 2026-05-19 13:01:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:18693 https://access.redhat.com/errata/RHSA-2026:18693
Comment 14 errata-xmlrpc 2026-05-19 13:02:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:19019 https://access.redhat.com/errata/RHSA-2026:19019
Comment 15 errata-xmlrpc 2026-05-19 13:20:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:18958 https://access.redhat.com/errata/RHSA-2026:18958
Comment 16 errata-xmlrpc 2026-05-19 13:20:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:18957 https://access.redhat.com/errata/RHSA-2026:18957
Comment 17 errata-xmlrpc 2026-05-19 17:58:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:19176 https://access.redhat.com/errata/RHSA-2026:19176
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