SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2009-4071

Opera before 10.10, when exception stacktraces are enabled, places scripting error messages from a web site into variables that can be read by a different web site, which allows remote attackers to obtain sensitive information or conduct cross-site…

MEDIUM 5.8EPSS 2.23%

Does this matter?

Lower severity and a low EPSS score (2.23%). Track it; it rarely justifies an emergency change on its own.

Description

Opera before 10.10, when exception stacktraces are enabled, places scripting error messages from a web site into variables that can be read by a different web site, which allows remote attackers to obtain sensitive information or conduct cross-site scripting (XSS) attacks via unspecified vectors.

CVSS 2.0
5.8 MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:N
EPSS
2.23% probability · 83th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-16
Affected
opera/opera browser
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 2.23%26 October 202626 October 2026

EPSS 2.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.