GitHub Advisoryadvisory · PyPI

GHSA-3hh9-752g-5g22 LMCache: 16-bit multimodal hash collision can poison KV cache entries

LOW Published 2026-06-04 Modified 2026-07-15 Official page ↗
Aliases
CVE-2026-10813
Ecosystem
PyPI
Packages
lmcache
Severity
Low
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Weaknesses
CWE-327
Reviewed
2026-07-15

Affected packages

• PyPI lmcache: <= 0.4.6 (no fix yet)

Description

A flaw has been found in LMCache up to 0.4.6. This affects the function hex_hash_to_int16 of the file lmcache/integration/vllm/utils.py of the component KV Cache Handler. Executing a manipulation can lead to use of weak hash. The attack needs to be launched locally. The attack requires a high level of complexity. It is indicated that the exploitability is difficult. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

Related

Alias · CVE (1)

  • CVE-2026-10813 A flaw has been found in LMCache up to 0.5.4. vulnerability

Weakness · CWE (1)

  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm weakness

References