Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites (CVE-2023-54356) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2023-54356

Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites

Answer in brief

CVE-2023-54356 records a Unknown severity vulnerability in Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites. The current sources do not mark it as known exploited. The current feed maps kyverno/kyverno (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 1, 2026Updated Sep 1, 2026Source checked Sep 1, 2026First seen by HOL Sep 1, 2026Material review Sep 1, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kyverno/kyverno (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
kyverno/kyvernogeneric	>=0 <1.9.5, 1.10.0	1.9.5, 1.10.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for kyverno/kyverno.
Review the reported fix. Update kyverno/kyverno to 1.9.5, 1.10.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 1, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.