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Server-Side Request Forgery (SSRF) Affecting cockpit-image-builder package, versions <0:94.4-1.el10_2

Severity

 Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.22% (12th percentile)

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  • Snyk IDSNYK-CENTOS10-COCKPITIMAGEBUILDER-19398430
  • published28 Aug 2026
  • disclosed24 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 24 Aug 2026

CVE-2026-75975  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Centos:10 cockpit-image-builder to version 0:94.4-1.el10_2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cockpit-image-builder package and not the cockpit-image-builder package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

fast-uri is a URI parser for Node.js. Its custom parser for bracketed IPv6 literals does not validate the complete IPv6 grammar, so invalid trailing text in an authority can be silently discarded and a malformed attacker-controlled host is turned into a different valid IPv6 destination. For example, a bracketed literal with invalid trailing characters is normalized to the unspecified address, which a Node HTTP client then connects to a local service over loopback, and other malformed literals collapse to private-range addresses. No error is set on the parsed result, so an application checking the error field cannot detect the rewrite. An application that normalizes untrusted URLs before outbound requests, redirects, proxy routing, or address-policy enforcement can be redirected to a local or private IPv6 target, giving a server-side request forgery and address-policy bypass primitive. The affected versions are 2.3.1 up to but not including 2.4.5, 3.0.0 up to but not including 3.1.6, and 4.0.0 up to but not including 4.1.3. The issue is fixed in 2.4.5, 3.1.6, and 4.1.3, which validate bracketed IP literals against the full grammar and mark malformed literals as authority errors. Users should upgrade to a patched version.

CVSS Base Scores

version 3.1