Opera: >> Opera Browser >> 10.51 Security Vulnerabilities
Opera cannot properly restrict modifications to cookies established in HTTPS sessions, which allows man-in-the-middle attackers to overwrite or delete arbitrary cookies via a Set-Cookie header in an HTTP response, related to lack of the HTTP Strict Transport Security (HSTS) includeSubDomains feature, aka a "cookie forcing" issue.
CVSS Score
5.8
EPSS Score
0.004
Published
2011-08-09
Unspecified vulnerability in Opera before 11.11 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by www.falk.de.
CVSS Score
5.0
EPSS Score
0.005
Published
2011-07-01
Opera before 11.11 allows user-assisted remote attackers to cause a denial of service (application crash) via a crafted web page that is not properly handled during a reload occurring after the opening of a popup of the Easy Sticky Note extension.
CVSS Score
4.3
EPSS Score
0.005
Published
2011-07-01
The Cascading Style Sheets (CSS) implementation in Opera before 11.11 does not properly handle the column-count property, which allows remote attackers to cause a denial of service (infinite repaint loop and application hang) via a web page, as demonstrated by an unspecified Wikipedia page.
CVSS Score
5.0
EPSS Score
0.005
Published
2011-07-01
Opera before 11.11 does not properly handle destruction of a Silverlight instance, which allows remote attackers to cause a denial of service (application crash) via a web page, as demonstrated by vod.onet.pl.
CVSS Score
5.0
EPSS Score
0.005
Published
2011-07-01
Unspecified vulnerability in Opera before 11.11 allows remote attackers to cause a denial of service (application crash) via vectors involving a Certificate Revocation List (CRL) file, as demonstrated by the multicert-ca-02.crl file.
CVSS Score
5.0
EPSS Score
0.003
Published
2011-07-01
Opera before 11.10 allows remote attackers to hijack (1) searches and (2) customizations via unspecified third party applications.
CVSS Score
5.0
EPSS Score
0.003
Published
2011-07-01
The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.
CVSS Score
5.0
EPSS Score
0.005
Published
2011-07-01
Unspecified vulnerability in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by a certain Tomato Firmware page.
CVSS Score
5.0
EPSS Score
0.005
Published
2011-07-01
Unspecified vulnerability in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by futura-sciences.com, seoptimise.com, and mitosyfraudes.org.
CVSS Score
5.0
EPSS Score
0.005
Published
2011-07-01