CVE-2026-44949Network attack vector

Namespace creation and RBAC injection via unauthenticated webhook

Published Jun 30, 2026 · Updated Jun 30, 2026

Missing authentication in SUSE Rancher Webhook allows remote attackers to create namespaces and inject Fleet workspace RBAC bindings. The FleetWorkspace mutating admission handler performs object-creation side effects from crafted admission data instead of deferring them to an authenticated controller. Exploitation requires existing code execution inside the cluster, such as a running pod, and changes the integrity of newly created workspace RBAC.

CVSS severity7.0
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in SUSE Rancher Webhook allows remote attackers to create namespaces and inject Fleet workspace RBAC bindings. The FleetWorkspace mutating admission handler performs object-creation side effects from crafted admission data instead of deferring them to an authenticated controller. Exploitation requires existing code execution inside the cluster, such as a running pod, and changes the integrity of newly created workspace RBAC.

The record

CVE
CVE-2026-44949
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
NeuVector
Product
Rancher
Classifications
CWE-306, T1068, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.10.0 <0.10.7
  2. Affected versionversion=0.7.0 <0.7.10
  3. Affected versionversion=0.8.0 <0.8.7
  4. Affected versionversion=0.9.0 <0.9.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NeuVector · Rancherversion=0.10.0 <0.10.7; version=0.7.0 <0.7.10; version=0.8.0 <0.8.7; version=0.9.0 <0.9.6

Published CVSS scores

7.0SUSECVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
6.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1068Exploitation for Privilege Escalation
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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