6.1

CVE-2016-6854: open-xchange ox_guard Cross-site Scripting

CVSS: 6.1v3.0MediumModified
Published 15-12-2016Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2016-6854 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.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.0 (NVD)
EPSS score
2.44%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference, exploit-database

Timeline

  1. 15-12-2016
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code which got injected to a mail with inline PGP signature gets executed when verifying the signature. 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 versions

EPSS 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

20-09-202620-10-2026
EPSS score
2.44%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

  • exploit-databaselinuxUnverified

    Open-Xchange Guard 2.4.2 - Multiple Cross-Site Scripting Vulnerabilities

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Open-xchange1 product

1 vendor · 1 product

References

4 links