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CVE-2023-54356— Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites

Quick assessment

Affected
kyverno kyverno
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kyverno是Kyverno团队开源的一款云原生安全基线管理工具。 Kyverno 1.9.4及之前版本存在加密问题漏洞，该漏洞源于TLS端点支持不安全的3DES密码套件（TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA和TLS_RSA_WITH_3DES_EDE_CBC_SHA），可能导致攻击者利用Sweet32攻击恢复少量明文。

CVSS 3.7 · Low EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 2

VendorProduct Version RangeStatus
kyverno kyverno < 1.9.5, 1.10.0 affected
1.9.5, 1.10.0 unaffected
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I. Basic Information for CVE-2023-54356

Vulnerability Information
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Vulnerability Title
Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的加密强度
Source: CVE Program / CVE List V5
Vulnerability Title
Kyverno 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kyverno是Kyverno团队开源的一款云原生安全基线管理工具。 Kyverno 1.9.4及之前版本存在加密问题漏洞，该漏洞源于TLS端点支持不安全的3DES密码套件（TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA和TLS_RSA_WITH_3DES_EDE_CBC_SHA），可能导致攻击者利用Sweet32攻击恢复少量明文。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
kyverno kyverno 0 ~ 1.9.5, 1.10.0 -

II. Public POCs for CVE-2023-54356

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III. Intelligence Information for CVE-2023-54356

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Vendor Advisories for CVE-2023-54356 (2)

Same Patch Batch · kyverno · 2026-09-01 · 6 CVEs total

CVE-2026-84200 9.0 CRITICAL Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions
CVE-2026-84199 7.7 HIGH Kyverno before 1.16.2 SSRF via APICall Feature
CVE-2026-84195 7.7 HIGH Kyverno before 1.16.4 Credential Leak via apiCall
CVE-2026-84196 7.7 HIGH Kyverno before 1.18.0 Server-Side Request Forgery via apiCall
CVE-2025-15613 6.5 MEDIUM Kyverno before v1.13.4 SSRF via Service Call

IV. Related Vulnerabilities

Same product: kyverno
Same vendor: kyverno
Same weakness: CWE-326

V. Comments for CVE-2023-54356

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