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CVE-2023-34091

22
FAUCET Score

CVE-2023-34091 is a medium-severity vulnerability affecting Kyverno policy engine versions prior to 1.10.0. It allows authenticated attackers to bypass validation, generation, or mutate-existing policies by manipulating the deletionTimestamp field of resources, specifically by leveraging Kubernetes finalizers to prevent deletion. The vulnerability has a CVSS score of 6.5, indicating a network-based attack with low complexity, requiring low privileges, and resulting in high integrity impact without affecting confidentiality or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.10.0CPE matchmatch criteria
cpe:2.3:a:nirmata:kyverno:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 50th 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)

gopatch availablevia ghsa
Product: github.com/kyverno/kyvernoFixed in: 1.10.0
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

goGHSA-hq4m-4948-64ccmedium

Kyverno resource with a deletionTimestamp may allow policy circumvention

Jun 5, 2023

References

github.com / kyverno/kyverno/releases/tag/v1.10.0
Release Notes
github.com / kyverno/kyverno/security/advisories/GHSA-hq4m-4948-64cc
Vendor Advisory