CVE-2026-30118 Server-side request forgery in n/a

Critical 9.8 Published Updated

Unauthenticated attackers can exploit SSRF in the Scalar Proxy endpoint to expose sensitive headers and potentially escalate privileges.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-30118?

CVE-2026-30118 is a critical server-side request forgery vulnerability in n/a, published on 19 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

scalar/astro v0.1.13 was discovered to contain a Server-Side Request Forgery (SSRF) in the scalar_url query parameter of the Scalar Proxy endpoint. This vulnerability allows unauthenticated attackers to force the backend server to send HTTP requests to attacker-controlled URLs, leading to authentication cookies and headers exposure and possible privilege escalation.

Weakness: CWE-918

Which versions are affected by CVE-2026-30118?

How do I fix CVE-2026-30118?

No fix has been published for CVE-2026-30118 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-2026-30118 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30118 exists.

Sources

Also known as GHSA-46mr-vgx5-fc36.

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