CVE-2010-4043

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-10-21 · updated 2026-06-16
Weakness: CWE-264

Description

Opera before 10.63 does not prevent interpretation of a cross-origin document as a CSS stylesheet when the document lacks a CSS token sequence, which allows remote attackers to obtain sensitive information via a crafted document.

Affected products

Opera Browser: through 10.62; 5.0, 5.0-beta2, 5.0-beta3, 5.0-beta4, 5.0-beta5, 5.0-beta6 (+103)

References

http://secunia.com/advisories/41740
http://securitytracker.com/id?1024570
http://www.opera.com/docs/changelogs/mac/1063/
http://www.opera.com/docs/changelogs/unix/1063/
http://www.opera.com/docs/changelogs/windows/1063/
http://www.opera.com/support/kb/view/971/
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12208
http://secunia.com/advisories/41740
http://securitytracker.com/id?1024570
http://www.opera.com/docs/changelogs/mac/1063/
http://www.opera.com/docs/changelogs/unix/1063/
http://www.opera.com/docs/changelogs/windows/1063/

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