{"id":"CVE-2026-103243","title":"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","summary":"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 resourc…","severity":"medium","cvss":5.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","cwe":["CWE-918"],"vendor":"ModelTC","product":"LightLLM","affected":["LightLLM <= 1.2.0"],"published":"2026-09-30","updated":"2026-09-30","sourceUpdated":"2026-09-30T15:22:26.790","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103243","references":[{"url":"https://github.com/ModelTC/LightLLM","label":"disclosure@vulncheck.com"},{"url":"https://github.com/ModelTC/LightLLM/issues/1608","label":"disclosure@vulncheck.com"},{"url":"https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/multimodal_params.py#L149","label":"disclosure@vulncheck.com"},{"url":"https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/utils/multimodal_utils.py#L82-L91","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/lightllm-through-1.2.0-server-side-request-forgery-via-multimodal-endpoints","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-30T15:07:05.378Z","slug":"CVE-2026-103243","body":"## Overview\n\nLightLLM 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":31.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}