MoonshotAI Kimi Code up to 0.26.x FetchURL assertSafeFetchTarget server-side request forgery

Summaryinfo

A vulnerability marked as critical has been reported in MoonshotAI Kimi Code up to 0.26.x. The impacted element is the function assertSafeFetchTarget of the component FetchURL. This manipulation causes server-side request forgery. This vulnerability is handled as CVE-2026-17534. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in MoonshotAI Kimi Code up to 0.26.x. Affected by this vulnerability is the function assertSafeFetchTarget of the component FetchURL. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Kimi Code (@moonshot-ai/kimi-code) before 0.27.0 implements FetchURL SSRF hardening as a static hostname and IP-literal denylist in assertSafeFetchTarget, without resolving DNS or re-validating hosts after HTTP redirects. An attacker who can influence a FetchURL call (for example via prompt injection) can supply a crafted public hostname that resolves to loopback or another internal address, or a public URL that redirects to such a target, and thereby reach internal network services that the denylist was intended to block. FetchURL is included in the default auto-approve tool set, so the call does not require interactive user confirmation in manual mode.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-17534 since 07/27/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 0.27.0 eliminates this vulnerability. Applying the patch 31449728b72df94e22bcb2de350a1e7624895e30 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• MoonshotAI

Name

• Kimi Code

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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