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Fencer Intel
medium 4.4

CVE-2026-126758 json

Moonshot AI Kimi Code WorkspaceDirsService local.toml reliance on untrusted inputs in a security decision

published 11h ago modified 11h ago also EUVD-2026-124146

cvss
4.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
—
no EPSS score yet
public exploits
0
none known

Summary

A vulnerability was detected in Moonshot AI Kimi Code up to 2.0.2. This vulnerability affects unknown code of the file .kimi-code/local.toml of the component WorkspaceDirsService. Performing a manipulation of the argument additional_dir results in reliance on untrusted inputs in a security decision. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.1.0 is able to resolve this issue. Upgrading the affected component is recommended.

Patch / fix

  • Moonshot AI Kimi Code 2.1.0

Is CVE-2026-126758 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploits and checks

  • mcniyfj5bw9b.feishu.cn https://mcniyfj5bw9b.feishu.cn/docx/LsJldjpjXomkb4xTJ6CcWzdFnvd referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 4.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C
CNA 3.0 4.4 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:C
CNA 2.0 3.2 AV:L/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:OF/RC:C
CNA 4.0 1.9 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 4.4 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CNA 2.0 3.2 AV:L/AC:L/Au:S/C:N/I:P/A:P

Inferred packages

No advisory lists a package for this vulnerability yet. The CVE names these as products and links their GitHub repository, and the package registry names the same repository, so they are probably the affected packages. Low confidence: the versions are the CVE’s own for the product, and a stack check reports the package as unchecked when there are none.

ecosystem package repository affected
pypi kimi-code moonshotai/kimi-code
2.0.0
2.0.1
2.0.2

Affected products

  • Moonshot AI Kimi Code

Classification

Weakness
  • CWE-807 Reliance on Untrusted Inputs in a Security Decision
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.