CVE-2013-1639
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows...
CVE-2013-1639 is a medium vulnerability (CVSS 6.8) in Opera Browser, published February 8, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.
Exploit likelihood
What each source reports
NVD Score used
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.
- Record
CVE-2013-1639- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-352
- Updated
- 2026-11-02
CVE List No score
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.
- Record
CVE-2013-1639- Updated
- 2026-11-02
EUVDEUVD-2013-1670 No score
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.
- Record
EUVD-2013-1670- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jxcx-gjqg-4rgj No score
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows...
Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.
- Record
GHSA-jxcx-gjqg-4rgj- Weakness
- CWE-352
- Updated
- 2026-11-02
Affected products
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD |