Is CVE-2008-5022 in the CISA KEV catalog?

No. CVE-2008-5022 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2008-5022?

CVE-2008-5022 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2008-5022?

CVE-2008-5022 has an EPSS score of 3.03% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2008-5022?

Upgrade DeveloperEdition to 2.0.0.18 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2008-5022

HIGHEPSS 86th pctl

7.5

CVSS v2

NVD

Description

The nsXMLHttpRequest::NotifyEventListeners method in Firefox 3.x before 3.0.4, Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to bypass the same-origin policy and execute arbitrary script via multiple listeners, which bypass the inner window check.

CWE-287Improper Authentication

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:2.0 2.0.0.18Fixed in:2.0.0.18Mozilla

Affected:3.0 3.0.4Fixed in:3.0.4Mozilla

Mozilla Firefox (en-US)Windows application

Affected:3.0 3.0.4Fixed in:3.0.4Mozilla

Affected:2.0 2.0.0.18Fixed in:2.0.0.18Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:2.0 2.0.0.18Fixed in:2.0.0.18Mozilla

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

3.03%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	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.