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CVE-2026-10813— LMCache KV Cache utils.py hex_hash_to_int16 weak hash

Quick assessment

Affected
n/a LMCache
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LMCache是LMCache开源的一款大模型缓存加速工具。 LMCache 0.4.6及之前版本存在安全漏洞，该漏洞源于KV Cache Handler组件中lmcache/integration/vllm/utils.py文件的hex_hash_to_int16函数使用弱哈希，可能导致本地攻击者利用该漏洞。

CVSS 3.6 · Low EPSS 0.07% · P0

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 7

VendorProduct Version RangeStatus
n/a LMCache 0.4.0 affected
0.4.1 affected
0.4.2 affected
0.4.3 affected
0.4.4 affected
0.4.5 affected
0.4.6 affected
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I. Basic Information for CVE-2026-10813

Vulnerability Information
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Vulnerability Title
LMCache KV Cache utils.py hex_hash_to_int16 weak hash
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可逆的单向哈希
Source: CVE Program / CVE List V5
Vulnerability Title
LMCache 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LMCache是LMCache开源的一款大模型缓存加速工具。 LMCache 0.4.6及之前版本存在安全漏洞，该漏洞源于KV Cache Handler组件中lmcache/integration/vllm/utils.py文件的hex_hash_to_int16函数使用弱哈希，可能导致本地攻击者利用该漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- LMCache 0.4.0 cpe:2.3:a:lmcache:lmcache:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10813

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III. Intelligence Information for CVE-2026-10813

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Patches & Fixes for CVE-2026-10813 (1)

News Coverage for CVE-2026-10813 (1)

Same Patch Batch · n/a · 2026-06-04 · 20 CVEs total

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CVE-2026-36174 GNCC GP5 安全漏洞

IV. Related Vulnerabilities

Same vendor: n/a
Same weakness: CWE-328

V. Comments for CVE-2026-10813

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