Bug 2495322

Summary:	CVE-2026-25681 prometheus: golang.org/x/net/html: Arbitrary code execution via Cross-Site Scripting [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Christopher Lusk <clusk>
Component:	prometheus	Assignee:	Mikel Olasagasti Uranga <mikel>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	go-sig, mikel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["2b04a8f8-04fb-4c07-acfa-18c6f346b87d"]}
Fixed In Version:	prometheus-3.13.0-1.fc43 prometheus-3.13.0-1.fc44	Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-07-11 00:54:00 UTC	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:
Bug Blocks:	2480761

Description Christopher Lusk 2026-06-30 21:17:28 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.

Comment 1 Fedora Update System 2026-07-02 17:06:30 UTC

FEDORA-2026-4179e03375 (prometheus-3.13.0-1.fc43) has been submitted as an update to Fedora 43.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-4179e03375

Comment 2 Fedora Update System 2026-07-02 17:06:42 UTC

FEDORA-2026-01a1840582 (prometheus-3.13.0-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-01a1840582

Comment 3 Fedora Update System 2026-07-03 01:26:17 UTC

FEDORA-2026-01a1840582 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-01a1840582`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-01a1840582

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-07-03 01:47:29 UTC

FEDORA-2026-4179e03375 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-4179e03375`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-4179e03375

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-07-11 00:54:00 UTC

FEDORA-2026-4179e03375 (prometheus-3.13.0-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 6 Fedora Update System 2026-07-11 01:07:18 UTC

FEDORA-2026-01a1840582 (prometheus-3.13.0-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.