---
id: CVE-2026-90455
title: >-
  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
summary: >-
  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 compone…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-1395
vendor: CISA
product: Malcolm
affected:
  - Malcolm < v26.06.0
published: '2026-09-11'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:40:31.053'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90455'
references:
  - url: >-
      https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-254-01.json
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - cve.org
epss: 0.00219
epssPercentile: 0.12655
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T12:54:38.295969Z'
cvssSource: cna
ingestedAt: '2026-09-14T15:23:07.429Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.