Bug 2528259 (CVE-2026-85062)

Summary:	CVE-2026-85062 colord: omgovich/colord: Colord: Denial of Service via oversized malformed color strings
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:	abarbaro, alizardo, aruklets, ataylor, bbrownin, cdrage, dbruscin, doconnor, dschmidt, ehugonne, fmariani, gmalinko, gparvin, gtully, janstey, jbalunas, jchui, jhe, jlanda, jsherman, jwon, kshier, ktsao, kvanderr, lchilton, mcarlett, nboldt, oaljalju, pdelbell, pjindal, psrna, rgodfrey, rhaigner, rhel-process-autobot, rstepani, rushinde, sdawley, sfeifer, simaishi, stcannon, tcunning, teagle, tsze, watson-tool-maintainers, yfang, yguenane
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	A flaw was found in Colord, a tool for color manipulations. A remote attacker can supply a specially crafted, oversized color string to the affected component. This can cause the processing thread to block, leading to a denial of service (DoS) for the application using Colord.	Story Points:	---
Clone Of:		Environment:
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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:	2528515, 2528517, 2528519, 2528520, 2528521, 2528524, 2528526, 2528514, 2528516, 2528518, 2528522, 2528523, 2528525
Bug Blocks:

Description OSIDB Bzimport 2026-09-03 20:42:35 UTC

Colord is a tiny yet powerful tool for high-performance color manipulations and conversions. Prior to 2.9.4, synchronous CSS color string matchers in src/colorModels/rgbString.ts, src/colorModels/hslString.ts, src/colorModels/hwbString.ts, src/colorModels/lchString.ts, and src/colorModels/cmykString.ts use the ambiguous numeric regular expression ([+-]?\d*.?\d+), allowing the same digits to be divided between overlapping quantifiers in quadratically many ways when malformed input is rejected. An attacker who can supply an unbounded color string to colord(), getFormat(), isEqual(), mix(), or contrast(), including through a request body, JSON field, or uploaded stylesheet, can block the processing thread with a multi-kilobyte payload. The affected matchers are parseRgbaString, parseHslaString, parseHwbaString, parseLchaString, and parseCmykaString. This issue is fixed in version 2.9.4.