CVE-2026-23634
Pepr Overly Permissive RBAC ClusterRole in Admin Mode
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.
INFO
Published Date :
Jan. 16, 2026, 8:15 p.m.
Last Modified :
Jan. 16, 2026, 8:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-23634
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | NONE | [email protected] | ||||
| CVSS 3.1 | NONE | MITRE-CVE |
Solution
- Update Pepr to version 1.0.5 or later.
- Apply least-privilege RBAC configurations for modules.
- Review and enforce RBAC policies.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-23634.
| URL | Resource |
|---|---|
| https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5 | |
| https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-23634 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-23634
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-23634 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-23634 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Jan. 16, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Added CWE CWE-272 Added Reference https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5 Added Reference https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q