CVE-2007-3498: Ezyang/htmlpurifier Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-6fh7-fwqj-mv49
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2007-3498 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Ezyang/htmlpurifier libraries in the Packagist ecosystem. The issue involves html purifier cross-site scripting vulnerability. Remediation is available by upgrading affected packages to version 2.0.1.

CVE-2007-3498 at a Glance

CVE Identifier CVE-2007-3498
GHSA Identifier GHSA-6fh7-fwqj-mv49
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Ezyang/htmlpurifier
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2007-3498

To remediate this vulnerability, upgrade all affected Ezyang/htmlpurifier dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ezyang/htmlpurifier fixed: 2.0.1 
Upgrade ezyang/htmlpurifier to 2.0.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for ezyang/htmlpurifier

How to Check if You Are Affected

To determine whether your application is affected by CVE-2007-3498, inspect your project dependencies for Ezyang/htmlpurifier:

inspect dependencies for ezyang/htmlpurifier

Analyze the terminal output to locate any version of Ezyang/htmlpurifier in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Ezyang/htmlpurifier, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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."

CVE-2007-3498 Affected Ezyang/htmlpurifier Versions

1 component(s)
Fixed Versions:
2.0.1
Product / Package Ecosystem Affected Versions Fixed Version
ezyang/htmlpurifier
 Packagist
< 2.0.1
2.0.1

References

NVD — CVE-2007-3498 NVD
https://nvd.nist.gov/vuln/detail/CVE-2007-3498
Security Fix Commit FIX COMMIT
https://github.com/ezyang/htmlpurifier/commit/96b571d23639bd70768b8db626ecaf8bbb7ca5a3
exchange.xforce.ibmcloud.com/vulnerabilities/353... WEB
https://exchange.xforce.ibmcloud.com/vulnerabilities/35300
Ezyang/htmlpurifier Source Repository REPOSITORY
https://github.com/ezyang/htmlpurifier
Ezyang/htmlpurifier Source Repository REPOSITORY
https://github.com/ezyang/htmlpurifier/commits/v2.0.1/smoketests/configForm.php
Ezyang/htmlpurifier Security Information SECURITY
https://web.archive.org/web/20200228110020/http://www.securityfocus.com/bid/24699
htmlpurifier.org/svnroot/htmlpurifie... WEB
http://htmlpurifier.org/svnroot/htmlpurifier/tags/2.0.1/NEWS

Frequently Asked Questions

What is CVE-2007-3498?
CVE-2007-3498 is a security vulnerability in Ezyang/htmlpurifier involving HTML Purifier Cross-site Scripting vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Ezyang/htmlpurifier versions are affected?
Affected versions include releases prior to 2.0.1 across affected packages: ezyang/htmlpurifier.
What version fixes CVE-2007-3498?
Upgrading to 2.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ezyang/htmlpurifier affected?
Yes, ezyang/htmlpurifier is affected in releases prior to 2.0.1. Upgrade your dependency to 2.0.1 or later.
What is the CVSS score of CVE-2007-3498?
CVE-2007-3498 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2007-3498?
CVE-2007-3498 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2007-3498?
Run the dependency tree command: 'inspect dependencies for ezyang/htmlpurifier'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-6fh7-fwqj-mv49",
  "modified" : "2024-10-29T21:20:55Z",
  "published" : "2022-05-01T18:14:25Z",
  "aliases" : [ "CVE-2007-3498" ],
  "summary" : "HTML Purifier Cross-site Scripting vulnerability",
  "details" : "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.\"",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ezyang/htmlpurifier"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2007-3498"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ezyang/htmlpurifier/commit/96b571d23639bd70768b8db626ecaf8bbb7ca5a3"
  }, {
    "type" : "WEB",
    "url" : "https://exchange.xforce.ibmcloud.com/vulnerabilities/35300"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ezyang/htmlpurifier"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ezyang/htmlpurifier/commits/v2.0.1/smoketests/configForm.php"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20200228110020/http://www.securityfocus.com/bid/24699"
  }, {
    "type" : "WEB",
    "url" : "http://htmlpurifier.org/svnroot/htmlpurifier/tags/2.0.1/NEWS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-10-29T21:20:55Z",
    "nvd_published_at" : "2007-06-29T18:30:00Z"
  }
}