CVE-2026-103243

MEDIUM 5.8

LightLLM through 1.2.0 Server-Side Request Forgery via multimodal endpoints

CVSS Score

5.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	modeltc
Product	lightllm
Published	Sep 30, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

ModelTC / LightLLM

0 ≤ 1.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/ModelTC/LightLLM/issues/1608 github.com: https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/utils/multimodal_utils.py#L82-L91 github.com: https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/multimodal_params.py#L149 github.com: https://github.com/ModelTC/LightLLM vulncheck.com: https://www.vulncheck.com/advisories/lightllm-through-1.2.0-server-side-request-forgery-via-multimodal-endpoints

Credits

Mingkai Yu Jiapeng Li Jiajia Liu