GHSA-8p5c-vr7c-5g49CriticalCVSS 8.6
Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in...
🔗 CVE IDs covered (1)
📋 Description
Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata.
🔗 References (10)
- https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg
- https://nvd.nist.gov/vuln/detail/CVE-2026-110628
- https://github.com/kanbn/kan/pull/590
- https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7
- https://github.com/kanbn/kan
- https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27
- https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52
- https://hackmd.io/@leediay/HyIxU63ofg
- https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment
- https://github.com/advisories/GHSA-8p5c-vr7c-5g49