Bug 2491449 (CVE-2026-42127) - CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory allocation via large JSON payloads
Summary: CVE-2026-42127 grafana: Grafana: Denial of Service due to excessive memory al...
Keywords:
Status: NEW
Alias: CVE-2026-42127
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: 2530537
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-22 18:02 UTC by OSIDB Bzimport
Modified: 2026-10-06 15:29 UTC (History)
18 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-2026:54184 0 None None None 2026-08-12 07:42:52 UTC
Red Hat Product Errata RHSA-2026:54243 0 None None None 2026-08-12 09:26:11 UTC
Red Hat Product Errata RHSA-2026:67517 0 None None None 2026-09-15 09:24:46 UTC
Red Hat Product Errata RHSA-2026:67518 0 None None None 2026-09-15 09:38:18 UTC
Red Hat Product Errata RHSA-2026:76795 0 None None None 2026-10-06 15:29:47 UTC

Description OSIDB Bzimport 2026-06-22 18:02:00 UTC 
The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.
Comment 2 errata-xmlrpc 2026-08-12 07:42:51 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:54184 https://access.redhat.com/errata/RHSA-2026:54184
Comment 3 errata-xmlrpc 2026-08-12 09:26:10 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:54243 https://access.redhat.com/errata/RHSA-2026:54243
Comment 4 Jon Orris 2026-09-15 09:24:44 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:67517 https://access.redhat.com/errata/RHSA-2026:67517
Comment 5 Jon Orris 2026-09-15 09:38:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:67518 https://access.redhat.com/errata/RHSA-2026:67518
Comment 7 Jon Orris 2026-10-06 15:29:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:76795 https://access.redhat.com/errata/RHSA-2026:76795
Note You need to log in before you can comment on or make changes to this bug.