LLMGateway through 1.20.0 Blind SSRF via Video-Generation callback_url

Advisories

LLMGateway through 1.20.0 Blind SSRF via Video-Generation callback_url

severity: medium
date: 10/11/2026
Affecting: LLMGateway <= 1.20.0
CVE: CVE-2026-108719
CWE: CWE-918 Server-Side Request Forgery (SSRF)
CVSS: 5.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
References: https://hackmd.io/@haind03/theopenco-llmgateway-video-callback-ssrf-no-egress-guard
https://github.com/theopenco/llmgateway/blob/c84ba987da18edd80358a3450ccaea75c5c67ca8/apps/gateway/src/videos/videos.ts#L374-L383
https://github.com/theopenco/llmgateway/blob/c84ba987da18edd80358a3450ccaea75c5c67ca8/apps/worker/src/services/video-jobs.ts#L2490-L2499
https://github.com/theopenco/llmgateway/blob/c84ba987da18edd80358a3450ccaea75c5c67ca8/apps/worker/src/worker.ts#L2961-L2971
https://github.com/theopenco/llmgateway
Credit: HaiND from the Post and Telecommunication Institute of Technology
Description: LLMGateway through 1.20.0 contains a blind server-side request forgery vulnerability that allows API key holders to reach internal hosts via the video-generation callback_url extension. Attackers can supply loopback, private, or cloud-metadata URLs that deliverWebhook POSTs to without the assertSafeWebhookTarget check, reaching internal services from the worker's network.

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