Low severity · published Sep 11, 2026
CVE-2026-90455
Dependency on vulnerable third-party component in Malcolm
3.7
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Malcolm · CISA
before v26.06.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90455
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90455
government-resource
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json
www.cisa.gov
https://www.cisa.gov/news-events/ics-advisories/icsa-26-254-01
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