Is CVE-2008-5506 in the CISA KEV catalog?

No. CVE-2008-5506 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-5506?

CVE-2008-5506 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2008-5506?

CVE-2008-5506 has an EPSS score of 2.09% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2008-5506?

Upgrade DeveloperEdition to 2.0.0.19 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2008-5506

MEDIUMEPSS 79th pctl

6.8

CVSS v2

NVD

Description

Mozilla Firefox 3.x before 3.0.5 and 2.x before 2.0.0.19, Thunderbird 2.x before 2.0.0.19, and SeaMonkey 1.x before 1.1.14 allows remote attackers to bypass the same origin policy by causing the browser to issue an XMLHttpRequest to an attacker-controlled resource that uses a 302 redirect to a resource in a different domain, then reading content from the response, aka "response disclosure."

CWE-264Permissions, Privileges, and Access Controls

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:2.0 2.0.0.19Fixed in:2.0.0.19Mozilla

Affected:3.0 3.0.5Fixed in:3.0.5Mozilla

Mozilla Firefox (en-US)Windows application

Affected:3.0 3.0.5Fixed in:3.0.5Mozilla

Affected:2.0 2.0.0.19Fixed in:2.0.0.19Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:2.0 2.0.0.19Fixed in:2.0.0.19Mozilla

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

2.09%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Related Vulnerabilities

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2012-1456	Medium	4.3	100%	-	-
CVE-2012-1459	Medium	4.3	100%	-	Fix
CVE-2012-1446	Medium	4.3	100%	-	-
CVE-2012-1443	Medium	4.3	100%	-	-
CVE-2012-1442	Medium	4.3	99%	-	-
CVE-2012-1457	Medium	4.3	98%	-	Fix

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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 2026-04-23.