CVE-2016-6853: open-xchange ox_guard Cross-site Scripting
Vulnerability summary
CVE-2016-6853 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in open-xchange ox_guard. EPSS estimates a 2.44% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities. 2 public exploits are recorded.
Timeline
- 15-12-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code and references to external websites can be injected to the names of PGP public keys. When requesting that key later on using a specific URL, such script code might get executed. In case of injecting external websites, users might get lured into a phishing scheme. 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.).
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
2.44%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
0.00 pp
From 2.44% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (packetstormsecurity.com)
Maturity: unknown
Open-Xchange Guard 2.4.2 - Multiple Cross-Site Scripting Vulnerabilities
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Open-xchange1 product
- ox_guard≤ 2.4.2
1 vendor · 1 product
References
4 links- packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.htmlX Refsource CONFIRMExploitThird Party AdvisoryVDB Entry