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

2LOW

Key Information:

Status
Lmcache
Vendor
CVE Published:
4 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-10813?

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.

Affected Version(s)

LMCache 0.4.0

LMCache 0.4.1

LMCache 0.4.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-10813 - Proof of Concept

References

https://vuldb.com/vuln/368261
vdb-entrytechnical-description
https://vuldb.com/vuln/368261/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10813
third-party-advisory

CVSS V4

Score:
2
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dem00 (VulDB User)
VulDB CNA Team
.