What’s Vulnerable › Vulnerabilities

CVE-2026-90455: Dependency on vulnerable third-party component in Malcolm

• Severity: low (CVSS 3.7 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: none known
• Published: 2026-09-11 · updated 2026-10-02
• Weakness: CWE-1395

Description

A prior update that raised a bundled HTTP client library to a version remediating known vulnerabilities was later reverted, reintroducing the earlier, vulnerable version into a log-processing component. The only code path in that component using the library issues a request to a single fixed, trusted vendor URL at initialization and does not process attacker-controlled input through the library, limiting practical exploitability of the reintroduced version in this context.

Affected products

• CISA Malcolm: before v26.06.0 — fixed in v26.06.0

How to fix

Upgrade to a fixed version: CISA Malcolm v26.06.0. Check the vendor advisory for mitigations.

References

• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-254-01

Get alerted when CVE-2026-90455 or the next vulnerability affects your stack