CVE-2026-34720

Zammad has an origin validation error in SSO mechanism

CVSS 2.3 LOWEPSS 0.1%CWE-346

Vexday Risk Score

8Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 2.3EPSS 0.1%KEV nãoPoC —Patch —

Ciclo de vida

08 abr 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanism in Zammad was not verifying the header originates from a trusted SSO proxy/gateway before applying further actions on it. This vulnerability is fixed in 7.0.1 and 6.5.4.

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Produtos afetados

zammad · zammad

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Referências

https://github.com/zammad/zammad/security/advisories/GHSA-hcv6-w4h9-p2p7