CVE-2012-4392 json
index.php in ownCloud 4.0.7 does not properly validate the oc_token cookie, which allows remote attackers to bypass authentication via a cr…
published 2012-09-05 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-4332
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
2.80% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/owncloud/core/commit/4fd069b47906ebcf83887970c732d464dbe7d37a referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/owncloud/core/commit/4fd069b47906ebcf83887970c732d464dbe7d37a
exploit, patch
-
openwall.com
/lists/oss-security/2012/08/11/1
mailing-list
-
openwall.com
/lists/oss-security/2012/09/02/2
mailing-list
Sources
- CVE List CVE-2012-4392
- NVD CVE-2012-4392
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.