CVE-2026-32255 Details.
Kan <= 0.5.4 - Server-Side Request Forgery
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-32255. What It Means.
Kan, an open-source project management tool (Trello alternative), versions 0.5.4 and below are vulnerable to an unauthenticated Server-Side Request Forgery in the /api/download/attatchment endpoint. The endpoint passes the attacker-controlled `url` query parameter straight to a server-side fetch() without validating the destination host, allowing an unauthenticated attacker to make the server issue arbitrary outbound HTTP requests and read back the full response body.
Affected Product. What Is Hit.
- Vendor
- kanbn
- Product
- Kanbn Kan
References. Where To Read More.
FAQ
Common Questions.
Kan <= 0.5.4 - Server-Side Request Forgery. Kan, an open-source project management tool (Trello alternative), versions 0.5.4 and below are vulnerable to an unauthenticated Server-Side Request Forgery in the /api/download/attatchment endpoint. The endpoint passes the attacker-controlled `url` query parameter straight to a server-side fetch() without validating the destination host, allowing an unauthenticated attacker to make the server issue arbitrary outbound HTTP requests and read back the full response body.
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-32255 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-32255 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Kanbn Kan to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-32255. Atlas does not run a check for it, so nothing here says whether a particular site is affected.