CVE-2004-0595

Public exploit available. Not confirmed exploited in the wild yet. A vendor fix is available.

CVSS 2.06.8Medium EPSS percentile99th45% chance in 30 days CISA KEVNot listedNo confirmed exploitation
Public exploit: 1 source FixVendor fixNo build named by the sources

Published 2004-07-16Updated 2026-04-16Sources: CVE.org, NVD

NVD CVE.org

What to do

The vendor has published a fix. Version details are below where the sources state them.

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS99th

Public exploit

CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in

EPSS

45% chance of exploitation activity in the next 30 days, which ranks it in the 99th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

A public exploit existed 40 days before the patch.

2026-06-25OpenVAS check added
2026-04-16Patch availablerecord updated
2026-03-23EPSS band changehigh → moderate
2026-03-06Public exploit / PoCsource: other
2004-07-16Publishedweakness classified

Affected products

avayacommercial · USaka avaya communication manager, s8300
redhatcommercial · USaka red hat
- fedora coreOn-premOperating Systems / linux-distro
trustixoss-project
- secure linuxSecurity ProductOn-premSecurity Products / vuln-mgmt-scanner
phposs-project · USaka pecl, pear, php language
- phpDev ToolOSS Libraries / generic-library

And 1 more affected product. See all after sign-in

Technical detail

CVSS 2.0 vector

Open in the CVSS calculator

AV:N/AC:M/Au:N/C:P/I:P/A:P

Scored 6.8 by NVD.

How it is reached

Access Vector NetworkExploitable remotely over the network
Access Complexity MediumSome conditions must be met
Authentication NoneNo authentication required

Impact if exploited

Confidentiality PartialSome information is disclosed
Integrity PartialSome data can be modified
Availability PartialReduced performance or service disruption

Weaknesses

NVD-CWE-OtherNo name in the record

Sources

References in the record

And 15 more references. See all after sign-in

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