SSRF in Modeltc Lightllm
CVE-2026-103243
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/ModelTC/LightLLM/issues/1608 (issue-tracking)
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/utils/multimodal_utils.py (technical-description)
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/multimodal_params.py (technical-description)
- github.com/ModelTC/LightLLM (product)
- www.vulncheck.com/advisories/lightllm-through-1.2.0-server-side-request-forgery… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-103243?
- CVE-2026-103243 is a medium-severity vulnerability in Modeltc Lightllm, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.8/10. Published 2026-09-30.
- How severe is CVE-2026-103243?
- Medium severity. CVSS v3 base score is 5.8 out of 10.