Ai-inference-server: authentication bypass via unprotected inference endpoint in api
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-306.
Summary
A flaw was found in the authentication enforcement mechanism of a model inference API in ai-inference-server. All /v1/* endpoints are expected to enforce API key validation. However, the POST /invocations endpoint failed to do so, resulting in an authentication bypass. This vulnerability allows unauthorized users to access the same inference features available on protected endpoints, potentially exposing sensitive functionality or allowing unintended access to backend resources.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat AI Inference Server | Affected | No fix yet |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-6920
- 2026-10-03 Alias added: GHSA-5qf8-7rm9-wfxp
References
More Red Hat Ai Inference Server vulnerabilities
- TI-2026-35991 Starlette has missing Host header validation that poisons request.url.path, bypassing path-based security checks KEVCVSS 3.1MEDIUM 6.5
- TI-2023-28739 Libtiff: segment fault in libtiff in tiffreadrgbatileext() leading to denial of service CVSS 3.1HIGH 7.5
- TI-2026-28834 jq: Out-of-Bounds Read in jv_parse_sized() Error Formatting for Non-NUL-Terminated Counted Buffers CVSS 4.0MEDIUM 6.9
- TI-2026-04544 Gdk-pixbuf: gdk-pixbuf: denial of service via heap-based buffer overflow when processing a specially crafted jpeg image CVSS 3.1HIGH 7.5
- TI-2026-04164 Libtiff: libtiff: arbitrary code execution or denial of service via signed integer overflow in tiff file processing CVSS 3.1HIGH 7.8
Sources
- CVE-2025-6920 · CVE Program
- CVE-2025-6920 · NVD
- FIRST EPSS
- GHSA-5qf8-7rm9-wfxp · GitHub Advisory Database · CC BY 4.0
- CVE-2025-6920 · Red Hat security data · CC BY 4.0
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