CVE-2016-6851

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2016-12-15 · updated 2026-06-17
Weakness: CWE-79

Description

An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code can be provided as parameter to the OX Guard guest reader web application. This allows cross-site scripting attacks against arbitrary users since no prior authentication is needed. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.) in case the user has an active session on the same domain already.

Affected products

OX Software GmbH OX App Suite: through 2.4.2

References

http://packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.html
http://www.securityfocus.com/archive/1/539395/100/0/threaded
http://www.securityfocus.com/bid/92920
https://www.exploit-db.com/exploits/40377/
http://packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.html
http://www.securityfocus.com/archive/1/539395/100/0/threaded
http://www.securityfocus.com/bid/92920
https://www.exploit-db.com/exploits/40377/

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