What’s Vulnerable › Vulnerabilities

CVE-2026-23634: Pepr Overly Permissive RBAC ClusterRole in Admin Mode

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-16 · updated 2026-06-17
• Weakness: CWE-272

Description

Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5.

Affected products

• defenseunicorns pepr: before 1.0.5 — fixed in 1.0.5

How to fix

Upgrade to a fixed version: defenseunicorns pepr 1.0.5. Check the vendor advisory for mitigations.

References

• https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5
• https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q

Get alerted when CVE-2026-23634 or the next vulnerability affects your stack