Is CVE-2004-2260 in the CISA KEV catalog?

No. CVE-2004-2260 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-2260?

CVE-2004-2260 has a CVSS v2 base score of 5.0 (MEDIUM).

What is the EPSS score for CVE-2004-2260?

CVE-2004-2260 has an EPSS score of 2.76% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2004-2260?

Upgrade Opera GX Stable to 7.50 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2004-2260

MEDIUMEPSS 84th pctl

5.0

CVSS v2

NVD

Description

Opera Browser 7.23, and other versions before 7.50, updates the address bar as soon as the user clicks a link, which allows remote attackers to redirect to other sites via the onUnload attribute.

CWE-601Open Redirect

How to fix

Remediation Available

Opera GX StableWindows application

Affected:7.50Fixed in:7.50Opera Software

Opera StableWindows application

Affected:7.50Fixed in:7.50Opera Software

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

2.76%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

References

Patch3

Vendor Advisory1

secunia.com

Third-Party Advisory1

exchange.xforce.ibmcloud.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.