---
id: CVE-2026-107207
title: >-
  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
summary: >-
  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 v…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-306
vendor: LMCache
product: LMCache
affected:
  - LMCache <= 0.5.5
published: '2026-10-07'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T16:17:45.617'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107207'
references:
  - url: 'https://github.com/LMCache/LMCache'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/lmcache_frontend/app.py#L411-L428
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/lmcache_frontend/app.py#L567-L604
    label: disclosure@vulncheck.com
  - url: 'https://github.com/LMCache/LMCache/issues/5512'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/lmcache-through-0.5.5-missing-authentication-in-frontend-node-catalog-allows-ssrf-allowlist-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-07T16:38:22.225Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.