CVE-2026-44938

Fleet has PSS Bypass through addLabelsFromOptions in Fleet Agent

HIGH
8.8
CVSS Score
Published: July 7, 2026 at 01:05 PM UTC
Updated: October 25, 2026 at 08:10 PM UTC
2 products affected across 2 vendorsRancher FleetRancher

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.12.0 ≤ v < 0.12.150.13.0 ≤ v < 0.13.110.14.0 ≤ v < 0.14.60.15.0 ≤ v < 0.15.2
0.12.0 ≤ v < 0.12.150.13.0 ≤ v < 0.13.110.14.0 ≤ v < 0.14.60.15.0 ≤ v < 0.15.20.12.00.13.00.14.00.15.0
Affected range stops below 0.12.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.13.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.14.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.15.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHsuse
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-522

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