Login Request a demo
Medium severity · published Sep 30, 2026
CVE-2026-103243
LightLLM through 1.2.0 Server-Side Request Forgery via multimodal endpoints
5.8
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
LightLLM · ModelTC
through 1.2.0 · source: vendor
Affected product
LI
LightLLM
ModelTC
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103243
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103243
issue-tracking
https://github.com/ModelTC/LightLLM/issues/1608
technical-description
https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/utils/multimodal_utils.py#L82-L91
technical-description
https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/multimodal_params.py#L149
product
https://github.com/ModelTC/LightLLM
third-party-advisory
https://www.vulncheck.com/advisories/lightllm-through-1.2.0-server-side-request-forgery-via-multimodal-endpoints
More from LightLLM
9.8
CVE-2026-103395
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Visual-Only RPyC Service
9.8
CVE-2026-103041
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service
9.8
CVE-2026-103040
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Router Profiler RPyC Service
9.8
CVE-2026-96560
LightLLM through 1.2.0 Unauthenticated Remote Code Execution via NCCL PD RPyC Control Channel
9.8
CVE-2026-93839
LightLLM through 1.2.0 Missing Authentication in PD Master /pd_register WebSocket Endpoint