What is CVE-2013-0202?

CVE-2013-0202 is a medium-severity vulnerability in ownCloud, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-12-17.

How severe is CVE-2013-0202?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in ownCloud

CVE-2013-0202

Cross-site scripting (XSS) vulnerability in ownCloud 4.5.5, 4.0.10, and earlier allows remote attackers to inject arbitrary web script or HTML via the action parameter to core/ajax/sharing.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-12-17 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (59.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

ownCloud — versions 4.5.5, and earlier, 4.0.10
ownCloud Server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

exchange.xforce.ibmcloud.com/vulnerabilities/81476 (VDB Entry, Third Party Advisory)
owncloud.org/security/advisories/multiple-xss-vulnerabilities-3/ (Vendor Advisory)

Frequently asked questions

What is CVE-2013-0202?: CVE-2013-0202 is a medium-severity vulnerability in ownCloud, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-12-17.
How severe is CVE-2013-0202?: Medium severity. CVSS v3 base score is 6.1 out of 10.