HTML Purifier Cross-site Scripting vulnerability

published 2007-06-29 19 y ago modified 2026-06-16 4 mo ago also GHSA-6fh7-fwqj-mv49 , EUVD-2022-2777

cvss: 6.1; version 3.1, GitHub
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits: 0; none known

Cross-site scripting (XSS) vulnerability in smoketests/configForm.php in HTML Purifier before 2.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to "unescaped print_r output."

Patch / fix

fixed in 1 links 2

packagist ezyang/htmlpurifier 2.0.1

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	ezyang/htmlpurifier	<2.0.1	2.0.1

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

htmlpurifier.org /svnroot/htmlpurifier/tags/2.0.1/NEWS
web, patch
github.com /ezyang/htmlpurifier/commit/96b571d23639bd70768b8db626ecaf8bbb7ca5a3
web
exchange.xforce.ibmcloud.com /vulnerabilities/35300
vdb-entry, web
osvdb.org /36722
vdb-entry
securityfocus.com /bid/24699
vdb-entry
nvd.nist.gov /vuln/detail/CVE-2007-3498
advisory
github.com /ezyang/htmlpurifier
package
github.com /ezyang/htmlpurifier/commits/v2.0.1/smoketests/configForm.php
web
web.archive.org /web/20200228110020/http://www.securityfocus.com/bid/24699
web

Sources

CVE List CVE-2007-3498
GitHub Advisory GHSA-6fh7-fwqj-mv49
NVD CVE-2007-3498

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary