CVE-2026-56734Medium· 5.3▾ SunlitZammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, during federated authentication (OAuth/OIDC/SAML), a profile image URL from the external identity provider is fetched without verifying the target addres…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, during federated authentication (OAuth/OIDC/SAML), a profile image URL from the external identity provider is fetched without verifying the target address. An actor who controls their profile at a connected provider may cause the server to connect to internal network locations. Response timing and error patterns differ between reachable and unreachable targets, allowing internal service probing. Worker processes may be blocked for several seconds per request. Requires a configured external authentication provider where the actor can modify their profile image URL. This issue is fixed in version 7.0.2.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-56726Medium· 5.1Zammad is a web based open source helpdesk/customer support system
CVE-2026-56733High· 8.7Zammad is a web based open source helpdesk/customer support system
CVE-2026-56730Low· 2.1Zammad is a web based open source helpdesk/customer support system
CVE-2026-56735Medium· 5.3Zammad is a web based open source helpdesk/customer support system
CVE-2026-56725High· 8.7Zammad is a web based open source helpdesk/customer support system
CVE-2026-56728Medium· 5.3Zammad is a web based open source helpdesk/customer support system