Bug 2453284 (CVE-2026-34043) - CVE-2026-34043 serialize-javascript: serialize-javascript: Denial of Service via specially crafted array-like object serialization
Summary: CVE-2026-34043 serialize-javascript: serialize-javascript: Denial of Service ...
Keywords:
Status: NEW
Alias: CVE-2026-34043
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: 2453940 2453942 2453944 2453946 2453947 2453948 2453950 2453938 2453939 2453941 2453943 2453945 2453949
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-31 03:02 UTC by OSIDB Bzimport
Modified: 2026-05-27 09:38 UTC (History)
104 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-2026:21286 0 None None None 2026-05-27 08:43:52 UTC
Red Hat Product Errata RHSA-2026:21291 0 None None None 2026-05-27 09:25:03 UTC
Red Hat Product Errata RHSA-2026:21293 0 None None None 2026-05-27 09:38:51 UTC

Description OSIDB Bzimport 2026-03-31 03:02:30 UTC 
Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.
Comment 2 errata-xmlrpc 2026-05-27 08:43:46 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:21286 https://access.redhat.com/errata/RHSA-2026:21286
Comment 3 errata-xmlrpc 2026-05-27 09:24:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:21291 https://access.redhat.com/errata/RHSA-2026:21291
Comment 4 errata-xmlrpc 2026-05-27 09:38:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:21293 https://access.redhat.com/errata/RHSA-2026:21293
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