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CVE-2026-23634

21
FAUCET Score

CVE-2026-23634 affects Pepr, a Kubernetes middleware, where versions prior to 1.0.5 default to a cluster-admin RBAC configuration, failing to enforce least-privilege for module authors. This medium severity vulnerability (CVSS 4.3) has a network attack vector with low complexity, potentially leading to low integrity impact (CWE-272). There is no evidence of active exploitation, and no public exploit code is available, though the CVE has garnered significant community discussion with 10 mentions.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.5CPE matchmatch criteria
cpe:2.3:a:defenseunicorns:pepr:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

0.0NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
0.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 14th percentile among its peer group of 21,957 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: peprFixed in: 1.0.5
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-w54x-r83c-x79qlow

Pepr Has Overly Permissive RBAC ClusterRole in Admin Mode

Jan 15, 2026

References

github.com / defenseunicorns/pepr/releases/tag/v1.0.5
Release Notes
github.com / defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q
Vendor Advisory