Medium

HTML Purifier allows remote attackers to obtain sensitive information

  • Disclosed: 17.05.2022
  • Updated: 11.10.2026 10:22

HTML Purifier 4.2.0 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by tests/PHPT/Reporter/SimpleTest.php and certain other files.

Affected software

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PlatformPackageVulnerable versionsFixed in
Composer package ezyang/htmlpurifier <= 4.2.0 no fix

References

CVSS score 5.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE)
CWE-200
Platform
Composer
Package
ezyang/htmlpurifier
Disclosed
17.05.2022
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-jw86-5cjf-mv79 - CC BY 4.0

Vulnerability history: ezyang/htmlpurifier

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
4
First → latest
05.2022 05.2022
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • Medium 4

Disclosures per year

  1. 2022: 4
  2. 2023: 0
  3. 2024: 0
  4. 2025: 0
  5. 2026: 0
  1. Medium CVE-2010-2479 < 4.1.1 4.1.1
  2. HTML Purifier allows remote attackers to obtain sensitive information this entry
    Medium · 5.3 CVE-2011-3744 <= 4.2.0 no fix
  3. Medium CVE-2010-4183 < 4.1.0 4.1.0
  4. Medium · 6.1 CVE-2007-3498 < 2.0.1 2.0.1

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