What is CVE-2026-107205?

CVE-2026-107205 is a high-severity vulnerability in Lmcache, classified under Missing Authentication for Critical Function. CVSS score: 8.6/10. Published 2026-10-07.

How severe is CVE-2026-107205?

High severity. CVSS v3 base score is 8.6 out of 10.

Auth bypass in Lmcache

CVE-2026-107205

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.

Vulnerability class: Broken Authentication

Published 2026-10-07 · last modified 2026-10-07.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Lmcache

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/LMCache/LMCache/issues/5508 (issue-tracking)
github.com/LMCache/LMCache (product)
github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/mp_coordinator/config.py (technical-description)
github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/mp_coordinator/app.py (technical-description)
www.vulncheck.com/advisories/lmcache-through-0.5.5-missing-authentication-in-mp… (third-party-advisory)

Frequently asked questions

What is CVE-2026-107205?: CVE-2026-107205 is a high-severity vulnerability in Lmcache, classified under Missing Authentication for Critical Function. CVSS score: 8.6/10. Published 2026-10-07.
How severe is CVE-2026-107205?: High severity. CVSS v3 base score is 8.6 out of 10.