GO-2023-1804Published

Kyverno before 1.9.5 Sweet32 Medium Strength Cipher Suites

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2023-54356

Published

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 published: 1 Sep 2026 11:33:51 UTC
Source modified: 8 Oct 2026 15:21:05 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1 · 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

euvd · EUVD-2023-60611

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Sep 1, 2026, 11:33:51 AM

dateUpdated: Oct 8, 2026, 3:21:05 PM

Source published: Sep 1, 2026, 11:33:51 AM (timezone not stated)
Source modified: Oct 8, 2026, 3:21:05 PM (timezone not stated)
Observed here: 8 Nov 2026 23:08:19 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 4.0 · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

nvd · CVE-2023-54356

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Awaiting Analysis

Weakness classifications: CWE-326

Original publisher date fields

published: 2026-09-01T12:17:11.220

lastModified: 2026-10-08T16:16:47.550

Source published: 1 Sep 2026 12:17:11 UTC
Source modified: 8 Oct 2026 16:16:47 UTC
Observed here: 24 Oct 2026 23:17:11 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Secondary · 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

osv · GHSA-hgv6-w7r3-w4qw

Published

### Summary Insecure 3DES ciphers are used which may lead to exploitation of the [Sweet32 vulnerability](https://sweet32.info/). Specifically, the ciphers TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA (secp256r1) and TLS_RSA_WITH_3DES_EDE_CBC_SHA (rsa 2048) are allowed. See CVE-2016-2183. This is fixed in Kyverno v1.9.5 and v1.10.0 and no known users have been affected. ### Details The ciphers in affected versions can be read using the following command which uses `nmap`: ```sh $ kubectl exec -it mypod -n kyverno sh kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead. **nmap -sV --script ssl-enum-ciphers -p 443 kyverno-cleanup-controller** or **nmap -sV --script ssl-enum-ciphers -p 443 kyverno-svc** Starting Nmap 7.92 ( https://nmap.org ) at 2023-05-26 10:55 UTC Nmap scan report for kyverno-cleanup-controller (10.103.199.233) Host is up (0.000058s latency). rDNS record for 10.103.199.233: kyverno-cleanup-controller.kyverno.svc.cluster.local PORT STATE SERVICE VERSION 443/tcp open ssl/http Golang net/http server (Go-IPFS json-rpc or InfluxDB API) | ssl-enum-ciphers: | TLSv1.2: | ciphers: **| TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA (secp256r1) - C** | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (secp256r1) - A | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (secp256r1) - A | TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (secp256r1) - A | TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (secp256r1) - A | TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (secp256r1) - A **| TLS_RSA_WITH_3DES_EDE_CBC_SHA (rsa 2048) - C** | TLS_RSA_WITH_AES_128_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_AES_128_GCM_SHA256 (rsa 2048) - A | TLS_RSA_WITH_AES_256_CBC_SHA (rsa 2048) - A | TLS_RSA_WITH_AES_256_GCM_SHA384 (rsa 2048) - A | compressors: | NULL | cipher preference: client | warnings: | 64-bit block cipher 3DES vulnerable to SWEET32 attack | TLSv1.3: | ciphers: | TLS_AKE_WITH_AES_128_GCM_SHA256 (ecdh_x25519) - A | TLS_AKE_WITH_AES_256_GCM_SHA384 (ecdh_x25519) - A | TLS_AKE_WITH_CHACHA20_POLY1305_SHA256 (ecdh_x25519) - A | cipher preference: server |_ least strength: C Service detection performed. Please report any incorrect results at https://nmap.org/submit/ . Nmap done: 1 IP address (1 host up) scanned in 12.72 seconds ```

Source published: 30 May 2023 20:07:06 UTC
Source modified: 14 Oct 2026 11:10:48 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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Publisher rating · MODERATE

osv · GO-2023-1804

Published

Kyverno vulnerable due to usage of insecure cipher in github.com/kyverno/kyverno

Source published: 20 Aug 2024 20:31:32 UTC
Source modified: 14 Oct 2026 11:10:48 UTC
Observed here: 24 Oct 2026 13:19:41 UTC
Source terms: OSV · upstream source license applies

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.