kbrain

CVE-2012-4142

MEDIUM · CVSS 4.3EPSS 1.2%EU EUVD

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.

Key facts

CVSS score
4.3 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness (CWE)
CWE-79
EPSS score
1.2% (67th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2012-4086)
Published
August 6, 2012
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2012-4086 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

  • apple / mac os x
  • linux / linux kernel
  • microsoft / windows
  • opera / opera browser
  • opera / opera browser
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  • opera / opera browser
  • opera / opera browser
  • opera / opera browser
  • opera / opera browser
  • opera / opera browser
  • opera / opera browser

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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