CVE-2026-21500: Stack Overflow in iccDEV XML Calculator Macro Expansion

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-01-07 · updated 2026-06-17
Weakness: CWE-20

Description

iccDEV provides a set of libraries and tools that allow for the interaction, manipulation, and application of ICC color management profiles. Prior to version 2.3.1.2, iccDEV is vulnerable to stack overflow in the XML calculator macro expansion. This issue has been patched in version 2.3.1.2.

Affected products

InternationalColorConsortium iccDEV: before 2.3.1.2 — fixed in 2.3.1.2

How to fix

Upgrade to a fixed version: InternationalColorConsortium iccDEV 2.3.1.2. Check the vendor advisory for mitigations.

References

https://github.com/InternationalColorConsortium/iccDEV/commit/cce5f9b68a6c067b7ef898ccd5b000770745fb14
https://github.com/InternationalColorConsortium/iccDEV/commit/f295826a6f15add90490030f23b2ddd8593bff5b
https://github.com/InternationalColorConsortium/iccDEV/issues/384
https://github.com/InternationalColorConsortium/iccDEV/pull/406
https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-4h4j-mm9w-2cp4

Get alerted when CVE-2026-21500 or the next vulnerability affects your stack