CVE-2026-34719

MEDIUM

4.3

Descricao

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the webhook model was missing a proper validation for loop back addresses, or link-local addresses — only the URL scheme (HTTP/HTTPS) as well as the hostname was checked. This could end up in retrieving confidential metadata of cloud/hosting providers. The existing check is now extended and is applied when configuring webhooks as well as triggering webhook jobs. This vulnerability is fixed in 7.0.1 and 6.5.4.

Detalhes CVE

Pontuacao CVSS v3.14.3

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado4/8/2026

Ultima modificacao4/17/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

zammad:zammad

Fraquezas (CWE)

CWE-918

Referencias

https://github.com/zammad/zammad/security/advisories/GHSA-2vgc-vfh2-rw75(security-advisories@github.com)

Correlacoes IOC

Sem correlacoes registradas

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