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Vulnerability record · CVE-2012-4392 · published 5 September 2012

CVE-2012-4392: Owncloud server improper authentication vulnerability

Owncloud · Owncloud Server

index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.

7.5 CVSS 2.0 High EPSS 2.8% · top 14.0% CWE-287 · Improper authentication
7.5CVSS 2.0 base score
2.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a crafted oc_token cookie value.

AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2012/08/11/1
http://www.openwall.com/lists/oss-security/2012/09/02/2
https://github.com/owncloud/core/commit/4fd069b47906ebcf83887970c732d464dbe7d37a ExploitPatch
http://www.openwall.com/lists/oss-security/2012/08/11/1
http://www.openwall.com/lists/oss-security/2012/09/02/2
https://github.com/owncloud/core/commit/4fd069b47906ebcf83887970c732d464dbe7d37a ExploitPatch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2012-4392), CISA KEV, FIRST EPSS (scores of 2026-10-04). This page is refreshed as NVD updates the record.