CVE-2026-17527Network attack vector

Cross-namespace PVC disclosure via overprivileged view role

Published Jul 27, 2026 · Updated Aug 26, 2026

Authorization bypass in Red Hat OpenShift Virtualization allows remote authenticated users to clone any cluster PVC into a writable namespace. CDI accepts create permission on datavolumes/source from the aggregated view ClusterRole as sufficient clone authorization without requiring source-namespace write access. Exploitation requires a cluster-wide view binding plus edit or admin access to one namespace and discloses PVC contents across namespace boundaries.

CVSS severity7.7
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Red Hat OpenShift Virtualization allows remote authenticated users to clone any cluster PVC into a writable namespace. CDI accepts create permission on datavolumes/source from the aggregated view ClusterRole as sufficient clone authorization without requiring source-namespace write access. Exploitation requires a cluster-wide view binding plus edit or admin access to one namespace and discloses PVC contents across namespace boundaries.

The record

CVE
CVE-2026-17527
Published
Jul 27, 2026
Updated
Aug 26, 2026
Vendor
389 Directory Server
Product
Red Hat Container Native Virtualization 4.20
Classifications
CWE-639, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat Container Native Virtualization 4.20Affected versions are unavailable in this record.
389 Directory Server · Red Hat OpenShift VirtualizationAffected versions are unavailable in this record.
389 Directory Server · Red Hat Container Native Virtualization 4.18Affected versions are unavailable in this record.
389 Directory Server · Red Hat Container Native Virtualization 4.22Affected versions are unavailable in this record.

Published CVSS scores

7.7Red HatCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1068Exploitation for Privilege Escalation

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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