CVE-2026-107207

HIGH 7.2

LMCache through 0.5.5 Missing Authentication in Frontend Node Catalog Allows SSRF Allowlist Bypass

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-306
Vendor	lmcache
Product	lmcache
Published	Oct 7, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

LMCache / LMCache

0 ≤ 0.5.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/LMCache/LMCache/issues/5512 github.com: https://github.com/LMCache/LMCache github.com: https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/lmcache_frontend/app.py#L411-L428 github.com: https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/lmcache_frontend/app.py#L567-L604 vulncheck.com: https://www.vulncheck.com/advisories/lmcache-through-0.5.5-missing-authentication-in-frontend-node-catalog-allows-ssrf-allowlist-bypass

Credits

Mingkai Yu Jiajia Liu