Kroxylicious-kms-provider-azure-key-vault-kms: streams for apache kafka kroxylicious: azure key vault ssrf exfiltrates bearer token via untrusted edek vaultname

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-105941
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-20 13:16:39 UTC
Updated2026-10-20 20:17:12 UTC
DescriptionThe Azure Key Vault KMS provider in Kroxylicious accepts an untrusted vaultName from wire-deserialized EDEK bytes without format validation, enabling SSRF that exfiltrates the proxy's Azure bearer token to an attacker-controlled host. Token replay against the real Key Vault defeats the entire record-encryption trust model.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

Problem Types: CWE-918 | CWE-918 Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Streams For Apache Kafka 3 Not specified Not specified

References

ReferenceSourceLinkTags
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com
github.com/kroxylicious/kroxylicious/security/advisories/GHSA-5j25-p663-... [email protected] github.com
access.redhat.com/security/cve/CVE-2026-105941 [email protected] access.redhat.com
github.com/kroxylicious/kroxylicious/commit/aa1b02a5f8e5bb5003f88b3160a8... [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2026-08-04T00:00:00.000ZReported to Red Hat.
CNA2026-10-20T11:00:00.000ZMade public.

Workarounds

CNA: 1. Restrict outbound network access — use Kubernetes NetworkPolicy to limit proxy pod egress to only legitimate Azure Key Vault endpoints on port 443. 2. Monitor KMS call patterns — alert on unwrap requests targeting unexpected vault hostnames.

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