CVE-2011-3744

Exp

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.

Published: 2011-09-23 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-3744 is rated High Exploit Risk (60/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.37%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.06% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2011-3744

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-3744

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.31% 1.37% +1.06%
2 2023-10-12 0.35% 0.31% -0.04%
3 2023-03-07 — 0.35% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-3744

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-3744

GitHub Security Advisory for CVE-2011-3744

GHSA-jw86-5cjf-mv79 · Severity: medium · Ecosystem: composer — HTML Purifier allows remote attackers to obtain sensitive information

OS Trackers for CVE-2011-3744

vendor priority summary link
ubuntu low CVE-2011-3744 low priority: Ubuntu including 1 source packages (php-htmlpurifier), 34 status rows across 34 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hardy, hirsute, impish, jammy, kinetic, lucid, lunar, mantic, maverick, natty, noble, oneiric, oracular, plucky, precise, quantal, questing, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 25, needed 7, DNE 2. https://ubuntu.com/security/CVE-2011-3744

Affected software / configurations for CVE-2011-3744

Vendor Product Version Raw CPE
htmlpurifier html_purifier 4.2.0 cpe:2.3:a:htmlpurifier:html_purifier:4.2.0:*:*:*:*:*:*:*

References for CVE-2011-3744

cvelogic Threat Intelligence