CVE-2023-54356

Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites

LOW
3.7
CVSS Score
Published: September 1, 2026 at 11:33 AM UTC
Updated: October 8, 2026 at 04:16 PM UTC
1 product affected across 1 vendorKyverno

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Severity
LOW3.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v < 1.9.5, 1.10.00
Affected range stops below 1.9.5, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 1.9.5, 1.10.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-326

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