Bug 2498608 (CVE-2026-15308) - CVE-2026-15308 python: Python: CPU Denial of Service in HTML parser via repeated unterminated markup declarations
Summary: CVE-2026-15308 python: Python: CPU Denial of Service in HTML parser via repea...
Keywords:
Status: NEW
Alias: CVE-2026-15308
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2498687 2498688 2498689 2498690 2498691 2498692 2498693 2498694 2498695 2498696 2498697 2498698
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-09 18:02 UTC by OSIDB Bzimport
Modified: 2026-07-14 12:34 UTC (History)
20 users (show)

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

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:39183 0 None None None 2026-07-14 12:34:02 UTC

Description OSIDB Bzimport 2026-07-09 18:02:33 UTC 
The incremental HTML parser (html.parser.HTMLParser) allows for CPU
denial-of-service through repeated unterminated markup declarations when
processing uncontrolled data.
Comment 1 errata-xmlrpc 2026-07-14 12:34:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:39183 https://access.redhat.com/errata/RHSA-2026:39183
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