# CVE-2023-42816: GO-2023-2338 - Denial of service from malicious signature in kyverno in github.com/kyverno/kyverno

Source: https://junglewise.ai/threats/cve-2023-42816-go-2023-2338-denial-of-service-from-malicious-signature-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-08-21  
License: CC BY 4.0 with a link back

CVE-2023-42816 · Severity: info · Published 2024-08-21

Denial of service from malicious signature in kyverno in github.com/kyverno/kyverno

Technologies: [github.com/kyverno/kyverno (Go)](https://junglewise.ai/threats/technologies/github-com-kyverno-kyverno). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2023-42816 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-42816 being exploited in the wild.

**How severe is CVE-2023-42816?** Informational severity, published 21 August 2024.

**Which products and versions are affected?** github.com/kyverno/kyverno (Go) SEMVER:introduced=1.5.0-rc1.0.20230601080528-80d139bb5d1d,fixed=1.5.0-rc1.0.20230918070231-fec2992e3f9f.

**Is there a fix for CVE-2023-42816?** Yes. github.com/kyverno/kyverno (Go): upgrade to 1.5.0-rc1.0.20230918070231-fec2992e3f9f or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-42816?** Check whether you run github.com/kyverno/kyverno (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/kyverno/kyverno (Go): upgrade to 1.5.0-rc1.0.20230918070231-fec2992e3f9f or later

  ```sh
  go get github.com/kyverno/kyverno@v1.5.0-rc1.0.20230918070231-fec2992e3f9f
  ```


## Affected products

- github.com/kyverno/kyverno (Go) SEMVER:introduced=1.5.0-rc1.0.20230601080528-80d139bb5d1d,fixed=1.5.0-rc1.0.20230918070231-fec2992e3f9f

## Identifiers

- CVE-2023-42816
- GO-2023-2338

## Related threats

- [Kyverno policy bypass via multiple exceptions](https://junglewise.ai/threats/cve-2026-84200-kyverno-policy-bypass-via-multiple-exceptions)
- [Kyverno APICall server-side request forgery (SSRF) via unvalidated URL](https://junglewise.ai/threats/cve-2026-84199-kyverno-apicall-server-side-request-forgery-ssrf-via-unvalidated)
- [Kyverno server-side request forgery in apiCall](https://junglewise.ai/threats/cve-2026-84196-kyverno-server-side-request-forgery-in-apicall)
- [Kyverno apiCall credential leak to external endpoints](https://junglewise.ai/threats/cve-2026-84195-kyverno-apicall-credential-leak-to-external-endpoints)
- [Kyverno server-side request forgery via Service Calls](https://junglewise.ai/threats/cve-2025-15613-kyverno-server-side-request-forgery-via-service-calls)