How severe is CVE-2013-0304?

CVE-2013-0304 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2013-0304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-0304?

CVE-2013-0304 primarily affects Owncloud. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-0304?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-0304 published?

CVE-2013-0304 was published on 2014-06-05 and last updated on 2026-06-16.

CVE-2013-0304

CVE-2013-0304 is a medium-severity vulnerability in Owncloud with a CVSS 2.0 base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Owncloud
Published: 2014-06-05
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2013-0304?: CVE-2013-0304 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2013-0304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-0304?: CVE-2013-0304 primarily affects Owncloud. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-0304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-0304 published?: CVE-2013-0304 was published on 2014-06-05 and last updated on 2026-06-16.

References

Affected products (7)

cpe:2.3:a:owncloud:owncloud:*:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud_server:4.5.0:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud_server:4.5.1:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud_server:4.5.2:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud_server:4.5.3:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud_server:4.5.4:*:*:*:*:*:*:*
cpe:2.3:a:owncloud:owncloud_server:4.5.5:*:*:*:*:*:*:*

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