CVE-2026-23634 json
Pepr Overly Permissive RBAC ClusterRole in Admin Mode
published 2026-01-15 9 mo ago modified 2026-06-17 4 mo ago also GHSA-w54x-r83c-x79q , EUVD-2026-3113
- cvss
- 0.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm pepr 1.0.5
- defenseunicorns pepr 1.0.5
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 9 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 0.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| GitHub | 3.1 | 0.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | pepr | <1.0.5 |
1.0.5 |
Affected products
- defenseunicorns pepr
Classification
References
-
github.com
/defenseunicorns/pepr/pull/2883
web
-
github.com
/defenseunicorns/pepr/commit/d4675a662b8602fcde7e4bf603432f2f133b1fd1
web
-
github.com
/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q
web, vendor-advisory
-
github.com
/defenseunicorns/pepr/releases/tag/v1.0.5
web, release-notes
-
nvd.nist.gov
/vuln/detail/CVE-2026-23634
advisory
-
github.com
/defenseunicorns/pepr
package
Sources
- CVE List CVE-2026-23634
- GitHub Advisory GHSA-w54x-r83c-x79q
- NVD CVE-2026-23634
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