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Advisory record · GHSA-hx4v-cxpf-vh8m

Rancher Fleet has SSRF in Bundle Reader via Unvalidated Helm Repository URL in fleet.yaml

CVSS 5.0 MediumEPSS 0.0035 · 28th percentile

Published by the GitHub Advisory Database at 1 Jul 2026, 20:45 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/rancher/fleetGo>=0.15.0, <0.15.2 || >=0.14.0, <0.14.6 || >=0.13.0, <0.13.11 || >=0.12.0, <0.12.150.15.2, 0.14.6, 0.13.11, 0.12.15
Identifiers
GHSA-hx4v-cxpf-vh8m · CVE-2026-44936 · GO-2026-5873
Weakness (CWE)
CWE-918
Tags
Published
1 Jul 2026
Updated
7 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Fleet (github.com/rancher/fleet) versions 0.12.0 to before 0.12.15, 0.13.0 to before 0.13.11, 0.14.0 to before 0.14.6, and 0.15.0 to before 0.15.2 are affected when the helmRepoURLRegex field is not set on a GitRepo. An attacker with git push access to a monitored repository can make Fleet send configured Helm repository credentials to an attacker-controlled server. Upgrade to 0.12.15, 0.13.11, 0.14.6, or 0.15.2 or later; in the patched versions, credentials are forwarded only when helmRepoURLRegex is set.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.0 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N CNA (suse)
  • CISA KEV Not listed.
  • EPSS 0.0035, the 28th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:06 UTC First seen by agentprime
  2. 31 Oct 2026, 15:06 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.