CVE-2026-21684

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.25% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 16.5% of scored records. A rank, not a probability.

NVD base score

7.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-01-07 21:18Z8 MO AGO

Last updated

2026-01-07 21:35Z8 MO AGO

Reserved

2026-01-02

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.1)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-758Reliance on Undefined, Unspecified, or Implementation-Defined BehaviorClass

Data version

5.2

Document digest

828798d419ccdec30d999a09862308a8e18a037929e5e766d39e0f52d2910f8e

• github.comhttps://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-fg9m-j9x8-8279x_refsource_CONFIRM
• github.comhttps://github.com/InternationalColorConsortium/iccDEV/issues/216x_refsource_MISC
• github.comhttps://github.com/InternationalColorConsortium/iccDEV/pull/225x_refsource_MISC