SSRF in Kroxylicious Azure Key Vault KMS provider leaks bearer token
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
Red Hat streams for Apache Kafka 3 ships the Kroxylicious Azure Key Vault KMS provider, which accepts an untrusted vaultName from wire-deserialized EDEK bytes without format validation. This flaw, CWE-918, enables server-side request forgery that sends the proxy's Azure bearer token to an attacker-controlled host. An attacker with low privileges can reach this over the network without user interaction, and replaying the stolen token against the real Key Vault defeats the record-encryption trust model.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
The 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for streams for Apache Kafka 3. Red Hat rates the flaw Important and reports that no plan is available for streams for Apache Kafka 3.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| streams for Apache Kafka 3 | Affected | No fix yet |
Timeline
- 2026-10-20 Threatist record created from CVE-2026-105941
- 2026-10-20 2 new references · CNA
References
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Sources
- CVE-2026-105941 · CVE Program
- CVE-2026-105941 · NVD
- FIRST EPSS
- CVE-2026-105941 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences