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VulnerabilityPublished Updated

CVE-2026-10813: LMCache · Use of Weak Hash

Affects LMCacheSource CVE Database V5

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Public exploit available · CVSS 2.0 Low.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
2.0Low
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.07% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
LMCacheAffected
  • 0.5.0 – 0.5.4
5 affected builds
Fixed in–
PyPIlmcachepkg:pypi/lmcacheOther threatsAffected
  • <=0.4.6
Fixed in–

CPE configurations (1)

  • cpe:2.3:a:lmcache:lmcache:*:*:*:*:*:*:*:*

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A pull request to fix the issue is pending acceptance. Users should monitor the vendor or project repository for updates and apply the fix once it is officially released. Given the local and complex nature of the attack, no immediate urgent mitigation is required beyond applying the forthcoming patch.

Description

A flaw has been found in LMCache up to 0.5.4. 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. Upgrading to version 0.5.5 is able to mitigate this issue. This patch is called ce08eea76ce5898200efee55f4932fd07a7cabeb. It is suggested to upgrade the affected component. A contributor of the project confirms: "hex_hash_to_int16() was introduced in 0.3.1 (PR #882, commit f5174701). It is not present in 0.3.0, and it is still present in 0.4.7 through 0.5.4."

References

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