CVE-2013-0304

ownCloud Server before 4.5.7 does not properly check ownership of calendars, which allows remote authenticated users to read arbitrary calendars via the calid parameter to /apps/calendar/export.php. NOTE: this issue has been reported as a cross-site request forgery (CSRF) vulnerability, but due to lack of details, it is uncertain what the root cause is.

Published: 2014-06-05 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-0304 is rated Low Risk (37.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.00%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-0304

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.28% 1.00% +0.72%
2 2026-05-09 0.18% 0.28% +0.11%
3 2025-03-17 — 0.18% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-0304

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2013-0304

OS Trackers for CVE-2013-0304

vendor priority summary link
ubuntu medium CVE-2013-0304 medium priority: Ubuntu including 1 source packages (owncloud), 12 status rows across 12 suites (hardy, lucid, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily): DNE 6, ignored 4, not-affected 1, released 1. https://ubuntu.com/security/CVE-2013-0304

Affected software / configurations for CVE-2013-0304

Vendor Product Version Raw CPE
owncloud owncloud <= 4.5.6 cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:*
owncloud owncloud_server 4.5.0 cpe:2.3:a:owncloud:owncloud_server:4.5.0:*:*:*:*:*:*:*
owncloud owncloud_server 4.5.1 cpe:2.3:a:owncloud:owncloud_server:4.5.1:*:*:*:*:*:*:*
owncloud owncloud_server 4.5.2 cpe:2.3:a:owncloud:owncloud_server:4.5.2:*:*:*:*:*:*:*
owncloud owncloud_server 4.5.3 cpe:2.3:a:owncloud:owncloud_server:4.5.3:*:*:*:*:*:*:*
owncloud owncloud_server 4.5.4 cpe:2.3:a:owncloud:owncloud_server:4.5.4:*:*:*:*:*:*:*
owncloud owncloud_server 4.5.5 cpe:2.3:a:owncloud:owncloud_server:4.5.5:*:*:*:*:*:*:*

References for CVE-2013-0304

cvelogic Threat Intelligence