vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-44949

Unauthenticated namespace creation and RBAC injection via rancher-webhook FleetWorkspace mutating webhook

HIGH
7
CVSS Score
Published: June 30, 2026 at 02:41 PM UTC
Updated: October 25, 2026 at 09:10 PM UTC
1 product affected across 1 vendorRancher

Using Rancher by SUSE?

Get instant alerts when new vulnerabilities affect Rancher - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A Rancher FleetWorkspace admission path allowed side effects to occur in the Rancher webhook handler for versions 0.7.0 up to 0.7.10, 0.8.0 up to 0.8.7, 0.9.0 up to 0.9.6 and 0.10.0 up to 0.10.7. An unauthenticated attacker with network access to the in-cluster rancher-webhook service could submit a crafted admission payload and cause workspace-related Kubernetes objects to be created with attacker-chosen identity data.

Affected

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

Rancher· Rancher
90%
0.10.0 ≤ v < 0.10.70.7.0 ≤ v < 0.7.100.8.0 ≤ v < 0.8.70.9.0 ≤ v < 0.9.60.10.00.7.00.8.00.9.0
Affected range stops below 0.10.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.7.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.8.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.9.6, 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:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://github.com/rancher/webhook/security/advisories/GHSA-h83p-cq95-vph4

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

7HIGHsuse
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-306

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card