CVE-2026-15974 CVE-2026-15974

Medium 6.5 Published 30 Jul 2026 Updated 31 Jul 2026

Attackers can exploit unsanitized image URLs in SGLang's chat endpoint to perform SSRF and read local files, exposing internal secrets and services.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-15974?

CVE-2026-15974 is a medium-severity server-side request forgery vulnerability in SGLang, published on 30 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

SGLang contains an SSRF and local file read in the multimodal generation endpoint /v1/chat/completions due to unsanitized image_url, allowing access to internal metadata, secrets, and services.

Weakness: CWE-918

Which versions are affected by CVE-2026-15974?

It affects 1 product.

Products include Lmsys Sglang.

How do I fix CVE-2026-15974?

No fix has been published for CVE-2026-15974 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-15974 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15974 exists.

Sources

Also known as GHSA-hg26-hr8r-fxc9, GHSA-x7w5-h7rp-gfp9.