Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| kanbn / kan | affected 0.5.5 through 0.6.0 |
CWE
CWE-918
References
- https://hackmd.io/@leediay/HyIxU63ofg
- https://github.com/kanbn/kan/pull/590
- https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52
- https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27
- https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg
- https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7
- https://github.com/kanbn/kan
- https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment
ADP enrichment
No English description supplied.
No references supplied.