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CVE-2023-42814

18
FAUCET Score

CVE-2023-42814 is a denial-of-service vulnerability affecting Kyverno, a Kubernetes policy engine, specifically within its Notary verifier component. An attacker with control over the registry used by Kyverno to fetch attestations could send a malicious response, causing Kyverno to crash and block admission requests. Rated as Medium severity (CVSS 5.3), exploitation requires high attack complexity and user interaction, but results in high availability impact. This vulnerability primarily affects users building Kyverno from source (v1.11.0 and later) and is not present in official releases. There are no known exploits in the wild, nor any public exploit code or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.11.0CPE matchmatch criteria
cpe:2.3:a:nirmata:kyverno:1.11.0:-:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

3.1LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
1.6
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.67%
Probability of exploitation in next 30 days
EPSS Percentile
48.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0067 is in the 64th percentile among its peer group of 705 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / kyverno/kyverno/commit/80d139bb5d1d9d7e907abe851b97dc73821a5be2
Patch
github.com / kyverno/kyverno/commit/fec2992e3f9fcd6b9c62267522c09b182e7df73b
Patch
github.com / kyverno/kyverno/pull/8428
Patch
github.com / kyverno/kyverno/security/advisories/GHSA-9g37-h7p2-2c6r
Vendor Advisory