CVE-2012-4142

Opera < 12.01 - Cross-Site Scripting via HTML Character Handling

Title source: llm
STIX 2.1

Description

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.

References (5)

Core 5
Core References
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/mac/1166/
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/windows/1201/
Vendor Advisory x_refsource_confirm
http://www.opera.com/support/kb/view/1026/
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/mac/1201/
Vendor Advisory x_refsource_confirm
http://www.opera.com/docs/changelogs/unix/1201/

Scores

EPSS 0.0042
EPSS Percentile 62.0%

Details

CWE
CWE-79
Status published
Products (27)
opera/opera_browser 12.00 beta (2 CPE variants)
opera/opera_browser 10.00 (4 CPE variants)
opera/opera_browser 10.01
opera/opera_browser 10.10 (2 CPE variants)
opera/opera_browser 10.11
opera/opera_browser 10.50 (3 CPE variants)
opera/opera_browser 10.51
opera/opera_browser 10.52 (3 CPE variants)
opera/opera_browser 10.53 (3 CPE variants)
opera/opera_browser 10.54
... and 17 more
Published Aug 06, 2012
Tracked Since Feb 18, 2026