Bug 2449649 (CVE-2026-4519) - CVE-2026-4519 python: Python: Command-line option injection in webbrowser.open() via crafted URLs
Summary: CVE-2026-4519 python: Python: Command-line option injection in webbrowser.ope...
Keywords:
Status: NEW
Alias: CVE-2026-4519
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2449722 2449724 2449726 2449723 2449725 2449727 2449728 2449729 2449730 2449731 2449733 2449735
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-20 16:03 UTC by OSIDB Bzimport
Modified: 2026-04-15 10:43 UTC (History)
5 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-2026:6511 0 None None None 2026-04-02 18:35:51 UTC
Red Hat Product Errata RHBA-2026:6774 0 None None None 2026-04-07 11:24:46 UTC
Red Hat Product Errata RHBA-2026:6803 0 None None None 2026-04-07 13:34:29 UTC
Red Hat Product Errata RHBA-2026:6842 0 None None None 2026-04-07 13:55:51 UTC
Red Hat Product Errata RHBA-2026:7012 0 None None None 2026-04-08 11:05:59 UTC
Red Hat Product Errata RHBA-2026:7045 0 None None None 2026-04-08 12:03:24 UTC
Red Hat Product Errata RHBA-2026:7050 0 None None None 2026-04-08 12:33:34 UTC
Red Hat Product Errata RHBA-2026:7058 0 None None None 2026-04-08 13:38:59 UTC
Red Hat Product Errata RHBA-2026:7136 0 None None None 2026-04-08 20:08:17 UTC
Red Hat Product Errata RHBA-2026:7289 0 None None None 2026-04-09 11:02:46 UTC
Red Hat Product Errata RHBA-2026:7296 0 None None None 2026-04-09 13:13:23 UTC
Red Hat Product Errata RHBA-2026:8272 0 None None None 2026-04-15 10:43:23 UTC
Red Hat Product Errata RHSA-2026:6256 0 None None None 2026-03-31 09:48:21 UTC
Red Hat Product Errata RHSA-2026:6281 0 None None None 2026-03-31 16:28:30 UTC
Red Hat Product Errata RHSA-2026:6283 0 None None None 2026-03-31 16:54:57 UTC
Red Hat Product Errata RHSA-2026:6285 0 None None None 2026-03-31 17:18:14 UTC
Red Hat Product Errata RHSA-2026:6286 0 None None None 2026-03-31 17:18:06 UTC
Red Hat Product Errata RHSA-2026:6473 0 None None None 2026-04-02 13:59:25 UTC
Red Hat Product Errata RHSA-2026:6766 0 None None None 2026-04-07 11:11:11 UTC
Red Hat Product Errata RHSA-2026:7010 0 None None None 2026-04-08 13:57:42 UTC
Red Hat Product Errata RHSA-2026:7244 0 None None None 2026-04-09 08:23:53 UTC

Description OSIDB Bzimport 2026-03-20 16:03:17 UTC 
The webbrowser.open() API would accept leading dashes in the URL which 
could be handled as command line options for certain web browsers. New 
behavior rejects leading dashes. Users are recommended to sanitize URLs 
prior to passing to webbrowser.open().
Comment 2 errata-xmlrpc 2026-03-31 09:48:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:6256 https://access.redhat.com/errata/RHSA-2026:6256
Comment 3 errata-xmlrpc 2026-03-31 16:28:29 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6281 https://access.redhat.com/errata/RHSA-2026:6281
Comment 4 errata-xmlrpc 2026-03-31 16:54:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6283 https://access.redhat.com/errata/RHSA-2026:6283
Comment 5 errata-xmlrpc 2026-03-31 17:18:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6286 https://access.redhat.com/errata/RHSA-2026:6286
Comment 6 errata-xmlrpc 2026-03-31 17:18:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6285 https://access.redhat.com/errata/RHSA-2026:6285
Comment 7 errata-xmlrpc 2026-04-02 13:59:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:6473 https://access.redhat.com/errata/RHSA-2026:6473
Comment 8 errata-xmlrpc 2026-04-07 11:11:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:6766 https://access.redhat.com/errata/RHSA-2026:6766
Comment 9 errata-xmlrpc 2026-04-08 13:57:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:7010 https://access.redhat.com/errata/RHSA-2026:7010
Comment 10 errata-xmlrpc 2026-04-09 08:23:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:7244 https://access.redhat.com/errata/RHSA-2026:7244
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