CVE-2004-2363 — Validate-Before-Canonicalize vulnerability in the checkURI function in functions.inc.php in PHPX 3.0 through 3.2.6 allows remote attackers to conduct cross-site scripting (XSS) attacks via hex-encoded tags, which bypass the check for literal "<", ">", "(", and ")" characters, as demonstrated using the limit parameter to forums.php and a variety of other vectors

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MEDIUM

Validate-Before-Canonicalize vulnerability in the checkURI function in functions.inc.php in PHPX 3.0 through 3.2.6 allows remote attackers to conduct cross-site scripting (XSS) attacks via hex-encoded tags, which bypass the check for literal "<", ">", "(", and ")" characters, as demonstrated using the limit parameter to forums.php and a variety of other vectors

Published Aug 16, 2005

4.3

MEDIUM

CVSS 2.0

EPSS 1.85%

Description

Validate-Before-Canonicalize vulnerability in the checkURI function in functions.inc.php in PHPX 3.0 through 3.2.6 allows remote attackers to conduct cross-site scripting (XSS) attacks via hex-encoded tags, which bypass the check for literal "<", ">", "(", and ")" characters, as demonstrated using the limit parameter to forums.php and a variety of other vectors.

Remediation

No remediation recorded yet.

Metrics

1.85% 0.01849

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.01849

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	1.85% (0.01849)	78.32th	v5 (v2026.06.15)
Jun 15, 2026	1.85% (0.01849)	76.26th	v5 (v2026.06.15)
Mar 17, 2025	0.56% (0.00558)	66.23th	v4 (v2025.03.14)
Dec 12, 2024	0.22% (0.00221)	61.12th	v3 (v2023.03.01)
May 3, 2024	0.26% (0.00258)	65.36th	v3 (v2023.03.01)
Dec 6, 2023	0.26% (0.00258)	63.35th	v3 (v2023.03.01)
Jul 7, 2023	0.34% (0.00343)	67.57th	v3 (v2023.03.01)
Mar 7, 2023	0.49% (0.00487)	72.30th	v3 (v2023.03.01)
Mar 6, 2023	1.92% (0.01917)	78.00th	v2 (v2022.01.01)
Apr 1, 2022	1.92% (0.01917)	76.01th	v2 (v2022.01.01)
Feb 4, 2022	1.92% (0.01917)	55.17th	v2 (v2022.01.01)

Weaknesses (0)

No CWE recorded.

References (4)

http://www.phpx.org/project.php?action=view&project_id=1
x_refsource_MISCPatchURL Repurposed
http://www.securityfocus.com/archive/1/362230
mailing-listx_refsource_BUGTRAQExploitVendor Advisory
http://www.securityfocus.com/bid/10283
vdb-entryx_refsource_BIDExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/16065
vdb-entryx_refsource_XF

Link	Providers	Tags
http://www.phpx.org/project.php?action=view&project_id=1		x_refsource_MISCPatchURL Repurposed
http://www.securityfocus.com/archive/1/362230		mailing-listx_refsource_BUGTRAQExploitVendor Advisory
http://www.securityfocus.com/bid/10283		vdb-entryx_refsource_BIDExploitPatch
https://exchange.xforce.ibmcloud.com/vulnerabilities/16065		vdb-entryx_refsource_XF

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Aug 16, 2005

Updated Aug 8, 2024

Reserved Aug 16, 2005

Link CVE-2004-2363

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2004-2363

Red Hat

Severity n/a

Public date n/a

Links CVE-2004-2363