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CVE-2010-4043

17
FAUCET Score

CVE-2010-4043 describes a vulnerability in Opera versions prior to 10.63, where the browser fails to prevent cross-origin documents from being interpreted as CSS stylesheets if they lack a specific CSS token sequence. This flaw could allow remote attackers to extract sensitive information from affected Opera users. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and a partial impact on confidentiality, but no impact on integrity or availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.62CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:*:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:*:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:beta2:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:beta3:*:*:*:*:*:*
5.0CPE matchmatch criteria
cpe:2.3:a:opera:opera_browser:5.0:beta4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.95%
Probability of exploitation in next 30 days
EPSS Percentile
78.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0195 is in the 62nd percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/41740
Vendor Advisory
securitytracker.com / id
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12208
opera.com / docs/changelogs/mac/1063
opera.com / docs/changelogs/unix/1063
opera.com / docs/changelogs/windows/1063
opera.com / support/kb/view/971