What is CVE-2025-59026?

CVE-2025-59026 is a medium-severity vulnerability in Open-Xchange Gmbh Ox App Suite, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-11-27.

How severe is CVE-2025-59026?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Open-Xchange Gmbh Ox App Suite

CVE-2025-59026

Malicious content uploaded as file can be used to execute script code when following attacker-controlled links. Unintended actions can be executed in the context of the users account, including exfiltration of sensitive information. Please deploy the provided updates and patch releases. No publicly available exploits are known

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (7.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Open-xchange Gmbh Ox App Suite — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security@open-xchange.com (vendor-advisory)

Frequently asked questions

What is CVE-2025-59026?: CVE-2025-59026 is a medium-severity vulnerability in Open-Xchange Gmbh Ox App Suite, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-11-27.
How severe is CVE-2025-59026?: Medium severity. CVSS v3 base score is 5.4 out of 10.