Bug 2499061 (CVE-2026-8609)

Summary:	CVE-2026-8609 grafana: Grafana: Denial of Service via unbounded memory growth in OAuth login route
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amctagga, aoconnor, bniver, flucifre, gmeno, gparvin, groman, jbalunas, lchilton, mbenjamin, mhackett, rhaigner, rhel-process-autobot, sfeifer, sostapov, tsze, vereddy, watson-tool-maintainers
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Grafana. An unauthenticated attacker can repeatedly access the OAuth login route with unique values. This can lead to unbounded memory growth, eventually exhausting system memory and causing the Grafana instance to crash. This results in a denial of service for legitimate users.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2501319
Bug Blocks:

Description OSIDB Bzimport 2026-07-10 16:02:12 UTC

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).

Comment 3 errata-xmlrpc 2026-08-12 06:57:33 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:54178 https://access.redhat.com/errata/RHSA-2026:54178

Comment 5 Jon Orris 2026-09-15 09:24:47 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