Medium severity6.1NVD Advisory· Published Dec 15, 2016· Updated Jun 17, 2026
CVE-2016-6851
CVE-2016-6851
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2cpe:2.3:a:open-xchange:ox_guard:*:rev4:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:open-xchange:ox_guard:*:rev4:*:*:*:*:*:*range: <=2.4.2
- (no CPE)range: <2.4.2-rev5
Patches
Vulnerability mechanics
References
4- packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.htmlnvdExploitThird Party AdvisoryVDB Entry
- www.exploit-db.com/exploits/40377/nvdExploitThird Party AdvisoryVDB Entry
- www.securityfocus.com/bid/92920nvdThird Party AdvisoryVDB Entry
- www.securityfocus.com/archive/1/539395/100/0/threadednvd
News mentions
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