CVE-2026-126758: Input Validation Flaw (CVSS 4.4)

Description

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.

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CVSS v3.1 Score

4.4

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

EPSS — Exploit Prediction

0.0011

Probability of exploitation

0.01%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-807 CWE-807

References

Other References

https://github.com/MoonshotAI/kimi-code/releases/tag/%40moonshot-ai%2Fkimi-code%402.1.0 https://mcniyfj5bw9b.feishu.cn/docx/LsJldjpjXomkb4xTJ6CcWzdFnvd https://vuldb.com/cve/CVE-2026-126758 https://vuldb.com/submit/1033260 https://vuldb.com/vuln/435868 https://vuldb.com/vuln/435868/cti

Frequently Asked Questions

What is CVE-2026-126758? +

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. It has a CVSS v3.1 base score of 4.4 (MEDIUM).

How severe is CVE-2026-126758? +

CVE-2026-126758 has a CVSS v3.1 score of 4.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0011, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-126758? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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