CVE-2012-4142

Opera before 12.01 on Windows and UNIX, and before 11.66 and 12.x before 12.01 on Mac OS X, ignores some characters in HTML documents in unspecified circumstances, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via a crafted document.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 UNKNOWN
NETWORK
MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 60%
VendorProductVersion
operaopera_browser
𝑥
≤ 12.00
operaopera_browser
12.00:beta
operaopera_browser
𝑥
≤ 11.65
operaopera_browser
10.00
operaopera_browser
10.00:beta1
operaopera_browser
10.00:beta2
operaopera_browser
10.00:beta3
operaopera_browser
10.01
operaopera_browser
10.10
operaopera_browser
10.10:beta1
operaopera_browser
10.11
operaopera_browser
10.50
operaopera_browser
10.50:beta1
operaopera_browser
10.50:beta2
operaopera_browser
10.51
operaopera_browser
10.52
operaopera_browser
10.52:beta1
operaopera_browser
10.52:beta2
operaopera_browser
10.53
operaopera_browser
10.53:b
operaopera_browser
10.53:beta1
operaopera_browser
10.54
operaopera_browser
10.60
operaopera_browser
10.60:beta1
operaopera_browser
10.61
operaopera_browser
10.62
operaopera_browser
10.63
operaopera_browser
11.00
operaopera_browser
11.00:beta
operaopera_browser
11.01
operaopera_browser
11.10
operaopera_browser
11.10:beta
operaopera_browser
11.11
operaopera_browser
11.50
operaopera_browser
11.50:beta
operaopera_browser
11.51
operaopera_browser
11.52
operaopera_browser
11.52.1100
operaopera_browser
11.60
operaopera_browser
11.60:beta
operaopera_browser
11.61
operaopera_browser
11.62
operaopera_browser
11.64
operaopera_browser
12.00
operaopera_browser
12.00:beta
𝑥
= Vulnerable software versions