Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent (CVE-2026-44938) | HOL Guard CVE

High · CVSS 8.8CVE-2026-44938GHSA-864G-863M-VCVQ

Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent

Answer in brief

CVE-2026-44938 records a High severity (CVSS 8.8) vulnerability in Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent. The current sources do not mark it as known exploited. The current feed maps SUSE/Rancher (generic), github.com/rancher/fleet (go), github.com/rancher/fleet (go), github.com/rancher/fleet (go) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 7, 2026Updated Jul 8, 2026Source checked Sep 17, 2026First seen by HOL Jul 1, 2026Material review Jul 8, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.8
Exploitation: Not marked as known exploited
Affected software: 5 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps SUSE/Rancher (generic), github.com/rancher/fleet (go), github.com/rancher/fleet (go), github.com/rancher/fleet (go) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
SUSE/Ranchergeneric	>=0.15.0 <0.15.2 \|\| >=0.14.0 <0.14.6 \|\| >=0.13.0 <0.13.11 \|\| >=0.12.0 <0.12.15	0.15.2, 0.14.6, 0.13.11, 0.12.15
github.com/rancher/fleetgo	>=0.15.0,<0.15.2	0.15.2
github.com/rancher/fleetgo	>=0.14.0,<0.14.6	0.14.6
github.com/rancher/fleetgo	>=0.13.0,<0.13.11	0.13.11
github.com/rancher/fleetgo	>=0.12.0,<0.12.15	0.12.15

Recommended response

Check inventory. Check lockfiles and deployed manifests for SUSE/Rancher, github.com/rancher/fleet, github.com/rancher/fleet.
Review the reported fix. Update SUSE/Rancher to 0.15.2; github.com/rancher/fleet to 0.15.2; github.com/rancher/fleet to 0.14.6; github.com/rancher/fleet to 0.13.11; github.com/rancher/fleet to 0.12.15 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jul 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jul 8, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 1, 2026

Sources and claim methodology

Upstream source description

A vulnerability has been identified in Fleet's agent-side deployer, which did not filter security-sensitive keys from namespaceLabels in fleet.yaml (or BundleDeployment.spec.options.namespaceLabels) when applying them to the target namespace. An attacker with git push access to a Fleet-monitored repository could overwrite Pod Security Standards (PSS) enforcement labels on a target namespace. This allows the attacker to weaken admission controls and deploy workloads that PSS policies would otherwise block.

Quoted source text, attributed separately from HOL analysis.