Bug 2498122 (CVE-2026-59869) - CVE-2026-59869 js-yaml: js-yaml: Denial of Service via crafted YAML documents
Summary: CVE-2026-59869 js-yaml: js-yaml: Denial of Service via crafted YAML documents
Keywords:
Status: NEW
Alias: CVE-2026-59869
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:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-08 16:02 UTC by OSIDB Bzimport
Modified: 2026-10-23 08:27 UTC (History)
201 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 RHSA-2026:57590 0 None None None 2026-08-20 16:07:30 UTC
Red Hat Product Errata RHSA-2026:66488 0 None None None 2026-09-10 16:37:30 UTC
Red Hat Product Errata RHSA-2026:66545 0 None None None 2026-09-10 23:25:33 UTC
Red Hat Product Errata RHSA-2026:68333 0 None None None 2026-09-16 17:16:54 UTC
Red Hat Product Errata RHSA-2026:71113 0 None None None 2026-09-23 20:49:19 UTC
Red Hat Product Errata RHSA-2026:71114 0 None None None 2026-09-23 21:06:11 UTC

Description OSIDB Bzimport 2026-07-08 16:02:01 UTC 
js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in versions 3.15.0 and 4.3.0.
Comment 4 errata-xmlrpc 2026-08-20 16:07:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:57590 https://access.redhat.com/errata/RHSA-2026:57590
Comment 5 errata-xmlrpc 2026-09-10 16:37:20 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.14.1

Via RHSA-2026:66488 https://access.redhat.com/errata/RHSA-2026:66488
Comment 6 errata-xmlrpc 2026-09-10 23:25:23 UTC 
This issue has been addressed in the following products:

  Red Hat AMQ Broker 7.13.6

Via RHSA-2026:66545 https://access.redhat.com/errata/RHSA-2026:66545
Comment 7 Jon Orris 2026-09-16 17:16:46 UTC 
This issue has been addressed in the following products:

  Cryostat 4 on RHEL 9

Via RHSA-2026:68333 https://access.redhat.com/errata/RHSA-2026:68333
Comment 9 Jon Orris 2026-09-23 20:49:10 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.6 for RHEL 10
  Red Hat Ansible Automation Platform 2.6 for RHEL 9

Via RHSA-2026:71113 https://access.redhat.com/errata/RHSA-2026:71113
Comment 10 Jon Orris 2026-09-23 21:05:59 UTC 
This issue has been addressed in the following products:

  Red Hat Ansible Automation Platform 2.5 for RHEL 9
  Red Hat Ansible Automation Platform 2.5 for RHEL 8

Via RHSA-2026:71114 https://access.redhat.com/errata/RHSA-2026:71114
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