CVE-2026-103243
LightLLM through 1.2.0 Server-Side Request Forgery via multimodal endpoints
- State
- Published
- Severity
- 6.9 Medium
- Published
- Sep 30, 2026
- Updated
- Oct 2, 2026
- Reserved
- Sep 30, 2026
Description
LightLLM through 1.2.0 fails to validate image_url and audio_url parameters in multimodal endpoints, allowing unauthenticated attackers to perform server-side request forgery. Attackers can supply arbitrary URLs to fetch internal resources, with vision model processing disclosing content or error responses revealing internal network topology.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N | VulnCheck |
| 3.1 | 5.8 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
LightLLMModelTC |
|
References
- GitHub Issue #1608issue-tracking
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/utils/multimodal_utils.py#L82-L91technical-description
- https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/multimodal_params.py#L149technical-description
- https://github.com/ModelTC/LightLLMproduct
- VulnCheck Advisory: LightLLM through 1.2.0 Server-Side Request Forgery via multimodal endpointsthird-party-advisory
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