What is CVE-2017-0891?

CVE-2017-0891 is a medium-severity vulnerability in Nextcloud Server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-05-08.

How severe is CVE-2017-0891?

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

XSS in Nextcloud Server

CVE-2017-0891

Nextcloud Server before 9.0.58 and 10.0.5 and 11.0.3 are vulnerable to an inadequate escaping of error messages leading to XSS vulnerabilities in multiple components.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (40.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nextcloud Server — versions before 9.0.58 and 10.0.5 and 11.0.3
Nextcloud Nextcloud_server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support@hackerone.com (x_refsource_CONFIRM, Vendor Advisory)
support@hackerone.com (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2017-0891?: CVE-2017-0891 is a medium-severity vulnerability in Nextcloud Server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2017-05-08.
How severe is CVE-2017-0891?: Medium severity. CVSS v3 base score is 5.4 out of 10.