CVE-2023-54356
Low
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.
SeverityLow
CVSS3.7
Exploit probability—
ProductGithub.com/kyverno/kyverno
PublishedSep 1, 2026
First seenSep 1, 2026
Weakness typeCWE-326CWE-326
How to fix
Update
- github.com/kyverno/kyverno1.9.5 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/kyverno/kyvernoGo | v < 1.9.5 | 1.9.5 |
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