Kimi Code FetchURL SSRF protection bypass via DNS-resolving hostnames and redirects

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-17534
StatePUBLISHED
AssignerJFROG
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-27 10:16:37 UTC
Updated2026-07-27 20:37:16 UTC
DescriptionKimi 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

EPSS: 0.001210000 probability, percentile 0.022930000 (date 2026-07-29)

Problem Types: CWE-918 | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.5MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
3.1CNACVSS5.5MEDIUMCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA MoonshotAI Kimi Code affected 0.27.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/MoonshotAI/kimi-code/commit/31449728b72df94e22bcb2de350a1e762... [email protected] github.com
github.com/MoonshotAI/kimi-code [email protected] github.com
github.com/MoonshotAI/kimi-code/pull/1791 [email protected] github.com
github.com/MoonshotAI/kimi-code/releases/tag/%40moonshot-ai%2Fkimi-code%... [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Natan Nehorai (en)

CNA: JFrog Security Research (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-17T03:21:00.000ZFix merged in MoonshotAI/kimi-code#1791 (FetchURL SSRF hardening)
CNA2026-07-17T12:48:00.000ZFix released in @moonshot-ai/[email protected]
CNA2026-07-16T08:15:00.000ZIssue reported to Moonshot AI

Solutions

CNA: Upgrade to Kimi Code 0.27.0 or later. The fix resolves hostnames via DNS and rejects addresses in loopback, RFC1918, link-local, CGNAT, and ULA ranges; follows redirects manually with per-hop revalidation; and pins connections to the validated resolved addresses to reduce DNS-rebinding (TOCTOU) races.

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