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CVE-2012-3566

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service ...

4.3 Medium

CVE-2012-3566 is a medium vulnerability (CVSS 4.3) in Opera Browser, published June 14, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.06%, the 64th percentile. No source names a fixed version.

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application hang) via JavaScript code that changes a form before submission.

Exploit likelihood

1.06%Unchanged since Feb 4, 2022

What each source reports

NVD Score used 4.3

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application hang) via JavaScript code that changes a form before submission.

Record: CVE-2012-3566
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application hang) via JavaScript code that changes a form before submission.

Record: CVE-2012-3566
Updated: 2026-11-02

EUVDEUVD-2012-3513 No score

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application hang) via JavaScript code that changes a form before submission.

Record: EUVD-2012-3513
Updated: 2026-11-03

GitHub AdvisoriesGHSA-3v5j-fv58-rhv5 No score

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service ...

Opera before 12.00 Beta allows user-assisted remote attackers to cause a denial of service (application hang) via JavaScript code that changes a form before submission.

Record: GHSA-3v5j-fv58-rhv5
Updated: 2026-11-02

Affected products

opera browser

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD

References