PT-2026-66506 · Kanboard · Kanboard

Saidakbarxon Maxsudxonov · CVE-2026-57862 · Publicado 2026-07-30 · Atualizado 2026-07-30

NVD

CVSS v3.1

8.5

Alta

Vetor base

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Kanboard 1.2.52 and prior contains a server-side request forgery vulnerability that allows authenticated users to bypass SSRF protections by supplying hexadecimal IP address notation in user-controlled URLs. Attackers can submit hexadecimal-encoded internal IP addresses through the web link creation feature, causing cURL to resolve and connect to internal network resources such as cloud instance metadata services, localhost services, and RFC1918 addresses while the isPrivateURL() filter in app/Core/Http/Client.php incorrectly treats the input as safe due to FILTER VALIDATE IP rejecting non-dotted-decimal notation.

Correção

SSRF

Enumeração de Fraquezas

CWE-918

Identificadores relacionados

CVE-2026-57862

Produtos afetados

Kanboard

Referências · 4

• https://github.com/kanboard/kanboard · Nota
• https://vulncheck.com/advisories/kanboard-and-prior-ssrf-filter-bypass-via-hexadecimal-ip-notation · Nota
• https://gist.github.com/sermikr0/67c8acfc395e465127e729dc309da3ae · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-57862 · Nota de Segurança