Colord: Slow rejection of oversized malformed color strings
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Partial Red Hat: 1 fixed, 21 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-1333.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| omgovich | colord | before 2.9.4 | 2.9.4 | Patch available | CNA |
| — | colord (npm) | before 2.9.4 | 2.9.4 | Patch available | GHSA-2wm5-q62r-hmrv |
- colord Vendoromgovich Affected before 2.9.4 Fixed in 2.9.4 Patch available CNA
- colord (npm) Vendor— Affected before 2.9.4 Fixed in 2.9.4 Patch available GHSA-2wm5-q62r-hmrv
Remediation
- Fix · CNA colord (omgovich) Fixed in 2.9.4
- Fix · GHSA-2wm5-q62r-hmrv colord (npm) Fixed in 2.9.4 Advisory →
Red Hat 1 advisory
- RHSA-2026:90321 Released 2026-10-26 · Red Hat rating CriticalRed Hat OpenShift Dev Spaces 3.31.0 Release.
- Red Hat OpenShift Dev Spaces 3.31 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/jetbrains-ide-rhel9 +8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Gatekeeper 3 | Affected | — |
| Node HealthCheck Operator | Affected | No fix yet: Fix deferred |
| OpenShift Pipelines | Affected | No fix yet |
| OpenShift Service Mesh 3 | Affected | No fix yet: Fix deferred |
| Red Hat AMQ Broker 7 | Affected | — |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Build of Podman Desktop | Affected | No fix yet |
| Red Hat Certification Program for Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Connectivity Link 1 | Affected | — |
| Red Hat Data Grid 8 | Affected | — |
| Red Hat Developer Hub 1 | Affected | No fix yet |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | — |
| Red Hat Fuse 7 | Affected | — |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat Quay 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel for Spring Boot 4 | Affected | — |
| Secrets Management Console for Red Hat OpenShift | Affected | — |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces 3.31 | Fixed | RHSA-2026:90321 |
Not affected: 2 products
- Red Hat Hardened Images
- Red Hat OpenShift Dev Spaces 3.31
Timeline
- 2026-10-02 Threatist record created from CVE-2026-85062
- 2026-10-03 Alias added: GHSA-2wm5-q62r-hmrv
- 2026-10-27 Affected versions changed · Red Hat
- 2026-10-30 Fix available: RHSA-2026:90321 · Red Hat
- 2026-10-30 Fix available: Red Hat OpenShift Dev Spaces 3.31 · Red Hat
References
Sources
- CVE-2026-85062 · CVE Program
- CVE-2026-85062 · NVD
- FIRST EPSS
- GHSA-2wm5-q62r-hmrv · GitHub Advisory Database · CC BY 4.0
- CVE-2026-85062 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences