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CVE-2026-110628GHSA-QRX8-9HC6-JVQG

Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment

Published
Last modified
Status
published
Known exploitation
Not listed in CISA KEV
Fix
Fix or patch referenced
Public exploit
None on Exploit-DB
CISA SSVC
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial
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Decision points from CISA's Vulnrichment, assessed (SSVC 2.0.3).

SSVC documentation

Summary

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 versions

  • kanbn kan

    From 0.5.5 · through 0.6.0

References 8

hackmd.io

GitHub · kanbn/kan

vulncheck.com