Is CVE-2004-0595 in the CISA KEV catalog?

No. CVE-2004-0595 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0595?

CVE-2004-0595 has a CVSS v2 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2004-0595?

CVE-2004-0595 has an EPSS score of 45.16% (99th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2004-0595

MEDIUMEPSS 99th pctl

6.8

CVSS v2

NVD

Description

The strip_tags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (\0) characters within tag names when restricting input to allowed tags, which allows dangerous tags to be processed by web browsers such as Internet Explorer and Safari, which ignore null characters and facilitate the exploitation of cross-site scripting (XSS) vulnerabilities.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

45.16%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

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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.