Bug 2450839

Summary:	CVE-2026-27651 nginx: NGINX: Denial of Service via undisclosed requests when ngx_mail_auth_http_module is enabled [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Jon Moroney <jmoroney>
Component:	nginx	Assignee:	Felix Kaechele <felix>
Status:	ON_QA ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	felix, jorton, luhliari, mikel, pavel.lisy
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["7a8c4186-e346-42fb-a88f-56e424d78179"]}
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:	2450791

Description Jon Moroney 2026-03-24 17:11:48 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.

Comment 1 Fedora Update System 2026-03-25 19:15:09 UTC

FEDORA-2026-4de4d247a0 (nginx-1.28.3-1.fc44, nginx-mod-brotli-1.0.0~rc-7.fc44, and 5 more) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-4de4d247a0

Comment 2 Fedora Update System 2026-03-26 04:03:23 UTC

FEDORA-2026-4de4d247a0 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-2026-4de4d247a0`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-4de4d247a0

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