CVE-2010-4043
Opera before 10.63 does not prevent interpretation of a cross-origin document as a CSS stylesheet...
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2010-4043- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2010-4043- Updated
- 2026-11-02
EUVDEUVD-2010-4019 No score
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.
- Record
EUVD-2010-4019- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9gjg-9gc5-48xf No score
Opera before 10.63 does not prevent interpretation of a cross-origin document as a CSS stylesheet...
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.
- Record
GHSA-9gjg-9gc5-48xf- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2010-4043 is a medium vulnerability (CVSS 4.3) in Opera Browser, published October 21, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.95%, the 80th percentile. No source names a fixed version.
References
securitytracker.com/id?1024570
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12208
opera.com/docs/changelogs/mac/1063
secunia.com/advisories/41740
nvd.nist.gov/vuln/detail/CVE-2010-4043
github.com/advisories/GHSA-9gjg-9gc5-48xf