CVE-2026-107207 LMCache through 0.5.5 Missing Authentication in Frontend Node Catalog Allows SSRF Allowlist Bypass
Unauthenticated attackers can bypass SSRF allowlists in LMCache to access internal hosts and tamper with nodes via the frontend monitoring service.
- 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-2026-107207?
CVE-2026-107207 is a medium-severity server-side request forgery vulnerability in LMCache, published on 7 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
LMCache through 0.5.5 contains a server-side request forgery vulnerability in its frontend monitoring service that allows unauthenticated attackers to bypass the proxy allowlist by registering arbitrary hosts. Attackers can add entries via POST /api/proxies and then use /proxy or /proxy2 to reach internal hosts, read responses, and tamper with nodes or stop the heartbeat.
Weakness: CWE-306
Which versions are affected by CVE-2026-107207?
How do I fix CVE-2026-107207?
No fix has been published for CVE-2026-107207 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-2026-107207 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107207 exists.
Sources
Also known as GHSA-hrhp-726g-9jqc.