CVE-2004-0595
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…
- 6.8MediumCVSS base score
- 45.2%Exploitation in 30 daysEPSS · top 1.2% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it.
Show the exploits1
Exploit-DB1 entry
- PHP 4.x/5.0 - 'Strip_Tags()' Function Bypass (Exploit-DB entry) (opens in a new tab)
EDB-ID 24280remote, phppublished 14 Jul 2004Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 23 days later
· 23 days later
Published
- 20 years later
· 20 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 45.2% · top 1.2% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
References
18
- CLA-2004:847 (opens in a new tab)vendor-advisoryx_refsource_CONECTIVAx_transferred
- 20040714 TSSA-2004-013 - php (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- DSA-669 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- oval:org.mitre.oval:def:10619 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- RHSA-2004:395 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2004:405 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2004:392 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- DSA-531 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- SUSE-SA:2004:021 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- MDKSA-2004:068 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- php-strip-tag-bypass(16692) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- RHSA-2005:816 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SSRT4777 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- 20040722 [OpenPKG-SA-2004.034] OpenPKG Security Advisory (php) (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 10724 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 20040713 Advisory 11/2004: PHP memory_limit remote vulnerability (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- GLSA-200407-13 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- 20040714 Advisory 12/2004: PHP strip_tags() bypass vulnerability (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2004-0594 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2004-0595)Record last updated .