CVE-2026-107205 LMCache through 0.5.5 Missing Authentication in MP Coordinator Fleet Control API
Unauthenticated attackers can access the LMCache fleet control API to modify quotas, inject events, and disclose metadata.
- 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-2026-107205?
CVE-2026-107205 is a high-severity missing authorization 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 missing authentication vulnerability in the multiprocess coordinator that allows remote unauthenticated attackers to access its HTTP fleet control API listening on all interfaces by default. Attackers can register or deregister instances via /instances, overwrite quotas via /quota endpoints, inject events via /events, and enumerate /directory/keys to disrupt caching and disclose placement metadata.
Weakness: CWE-306
Which versions are affected by CVE-2026-107205?
How do I fix CVE-2026-107205?
No fix has been published for CVE-2026-107205 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-107205 being exploited?
There is no known exploitation of CVE-2026-107205 in the wild and no public exploit code.
Sources
Also known as GHSA-87j8-jqhj-hfm7.