Bug 2561819

Summary:	CVE-2026-113650 prometheus: sanitize-html: Denial of Service via unbounded recursion in iframe tag processing [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Vipul Nair <vinair>
Component:	prometheus	Assignee:	Mikel Olasagasti Uranga <mikel>
Status:	ON_QA ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	go-sig, mikel
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["6a05555e-b480-493e-ac6a-5a89a2d302a7"]}
Fixed In Version:		Doc Type:	---
Doc Text:		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:
Bug Blocks:	2556329

Description Vipul Nair 2026-10-27 11:29:31 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.

ApostropheCMS is an open-source Node.js content management system. In sanitize-html 2.18.0, when an <iframe> is not allowed and disallowedTagsMode is 'discard' (the defaults), its raw-text content is re-sanitized by a recursive call to sanitizeHtml(text, options). The recursion has no bound and starts each nested call with a fresh state. This vulnerability is fixed in 2.18.1.

Comment 1 Fedora Update System 2026-11-04 22:35:00 UTC

FEDORA-2026-c584e445b8 (prometheus-3.15.1-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-c584e445b8

Comment 2 Fedora Update System 2026-11-04 22:35:01 UTC

FEDORA-2026-17a53eb219 (prometheus-3.15.1-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-17a53eb219

Comment 3 Fedora Update System 2026-11-05 02:41:55 UTC

FEDORA-2026-17a53eb219 has been pushed to the Fedora 45 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-17a53eb219`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-17a53eb219

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

Comment 4 Fedora Update System 2026-11-05 03:11:11 UTC

FEDORA-2026-c584e445b8 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-c584e445b8`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-c584e445b8

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