---
id: CVE-2023-54356
title: >-
  Kyverno versions 1.9.4 and earlier support insecure 3DES cipher suites
  (TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA and TLS_RSA_WITH_3DES_EDE_CBC_SHA) on
  their TLS endpoints
summary: >-
  Kyverno versions 1.9.4 and earlier support insecure 3DES cipher suites
  (TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA and TLS_RSA_WITH_3DES_EDE_CBC_SHA) on
  their TLS endpoints. These 64-bit block ciphers are vulnerable to the Sweet32
  attack (CVE-2…
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-326
vendor: kyverno
product: github.com/kyverno/kyverno
affected:
  - github.com/kyverno/kyverno < 1.9.5
patched:
  - github.com/kyverno/kyverno 1.9.5
published: '2026-09-01'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:43:03.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-54356'
references:
  - url: 'https://github.com/kyverno/kyverno/security/advisories/GHSA-hgv6-w7r3-w4qw'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/kyverno-before-1.9.5-sweet32-medium-strength-cipher-suites
    label: disclosure@vulncheck.com
  - url: 'https://github.com/kyverno/kyverno/pull/7308'
  - url: 'https://github.com/kyverno/kyverno'
  - url: 'https://github.com/kyverno/kyverno/releases/tag/v1.9.5'
tags:
  - nvd
  - osv
  - go
epss: 0.00147
epssPercentile: 0.03265
aliases:
  - GHSA-hgv6-w7r3-w4qw
  - GO-2023-1804
ecosystem: go
ingestedAt: '2026-09-02T19:31:26.942Z'
---

## Overview

Kyverno versions 1.9.4 and earlier support insecure 3DES cipher suites (TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA and TLS_RSA_WITH_3DES_EDE_CBC_SHA) on their TLS endpoints. These 64-bit block ciphers are vulnerable to the Sweet32 attack (CVE-2016-2183), which, over very long-lived TLS connections carrying large volumes of traffic, could allow an attacker to recover small amounts of plaintext. The issue is fixed in Kyverno 1.9.5 and 1.10.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2023-54356)

Affected packages:

- `github.com/kyverno/kyverno < 1.9.5`

Patched in:

- `github.com/kyverno/kyverno 1.9.5`

Source: https://osv.dev/vulnerability/GHSA-hgv6-w7r3-w4qw