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PHP CVE-2026-23722

CRITICAL
Cross-site Scripting (XSS) (CWE-79)
2026-01-16 security-advisories@github.com
9.1
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 30, 2026 - 18:27 vuln.today
Public exploit code
CVE Published
Jan 16, 2026 - 20:15 nvd
CRITICAL 9.1

DescriptionGitHub Advisory

WeGIA is a Web Manager for Charitable Institutions. Prior to 3.6.2, a Reflected Cross-Site Scripting (XSS) vulnerability was discovered in the WeGIA system, specifically within the html/memorando/insere_despacho.php file. The application fails to properly sanitize or encode user-supplied input via the id_memorando GET parameter before reflecting it into the HTML source (likely inside a <script> block or an attribute). This allows unauthenticated attackers to inject arbitrary JavaScript or HTML into the context of the user's browser session. This vulnerability is fixed in 3.6.2.

AnalysisAI

WeGIA web manager for charitable institutions has a reflected XSS vulnerability prior to version 3.6.2 that enables account takeover through crafted malicious links.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Craft malicious URL with XSS payload in id_memorando parameter
Delivery
Send link to victim
Exploit
Browser loads insere_despacho.php
Execution
Unencoded payload reflects into HTML
Impact
JavaScript executes in victim's session

Vulnerability AssessmentAI

Exploitation No special conditions — remote unauthenticated exploitation against WeGIA versions prior to 3.6.2 with default configurations. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.1 with PoC available. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker sends a crafted link to a WeGIA administrator. When clicked, the XSS payload steals the session cookie, granting the attacker admin access to manage donor data, financial records, and institutional operations.
Remediation Upgrade WeGIA to version 3.6.2 or later. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all affected systems and apply vendor patches immediately. …

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CVE-2026-23722 vulnerability details – vuln.today

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