Bug 2427977

Summary:	CVE-2026-22028 ghc9.0: Preact: Arbitrary script execution via JSON serialization protection bypass [epel-10]
Product:	[Fedora] Fedora EPEL	Reporter:	Sandipan Roy <saroy>
Component:	ghc9.0	Assignee:	Jens Petersen <petersen>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	epel10	CC:	petersen
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["63935433-b5b5-47aa-9ade-5a66203cd2db"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2026-01-09 05:23:24 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:	2427941

Description Sandipan Roy 2026-01-08 15:59:43 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.

The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams

Comment 1 Jens Petersen 2026-01-09 05:23:24 UTC

According to https://github.com/preactjs/preact/security/advisories/GHSA-36hm-qxxp-pg3m
only some 10.x versions are a vulnerable and ghc (haddock-api) is using 8.3.