Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment
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.
CVE-2026-110628
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-110628
kan
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/kanbn/kan",
"vendor": "kanbn",
"product": "kan",
"versions": [
{
"status": "affected",
"version": "0.5.5",
"versionType": "semver",
"lessThanOrEqual": "0.6.0"
}
],
"packageURL": "pkg:github/kanbn/kan",
"collectionURL": "https://github.com",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-110628
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #32774 · Revision 1
- Added to Heist Feed
- Publisher date