Home/CVE/Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass
CVE

CVE-2013-1639

Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass

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.

MEDIUM · CVSS 6.8 EPSS 0.00107
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-352Cross-Site Request Forgery (CSRF)
▤

Affected Products & Versions

2
opera browser<= 12.12
opera browserall versions
▣

Scoring & Timeline

6.8
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Published to NVD08 Feb 2013 · 11:58 AM
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-updates/2013-02/msg00038.html
http://www.opera.com/docs/changelogs/unified/1213/
http://www.opera.com/support/kb/view/1045/Vendor Advisory
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