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TI-2016-05889 Aliases CVE-2016-6853GHSA-6jmc-wgh2-9jr6

An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5.

Priority LOW 32CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

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.).

Why it matters now

EPSS 0.02441 84th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:open-xchange:ox_guard:*:rev4:*:*:*:*:*:*up to 2.4.2VulnerableOpen-Xchange GmbH
  • cpe:2.3:a:open-xchange:ox_guard:*:rev4:*:*:*:*:*:* Versions up to 2.4.2 Vulnerable ·Open-Xchange GmbH

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-6853
  2. 2026-10-03 Alias added: GHSA-6jmc-wgh2-9jr6

References

Exploit 2

  • TI-2015-07026 An issue was discovered in Open-Xchange Guard before 2.2.0-rev8. CVSS 3.0HIGH 8.8
  • TI-2018-07786 OX Guard 2.8.0 has CSRF. CVSS 3.0HIGH 8.8
  • TI-2020-17472 OX Guard 2.10.4 and earlier allows a Denial of Service via a WKS server that responds… CVSS 3.1HIGH 7.5
  • TI-2016-03424 An issue was discovered in Open-Xchange OX Guard before 2.4.0-rev8. CVSS 3.0HIGH 7.5
  • TI-2016-05890 An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. CVSS 3.0MEDIUM 6.1
  • TI-2016-05887 An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. CVSS 3.0MEDIUM 6.1
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences