wpForo Forum < 2.1.9 - Reflected Cross-Site Scripting
Description
The wpForo Forum WordPress plugin before 2.1.9 does not escape some request parameters while in debug mode, leading to a Reflected Cross-Site Scripting vulnerability.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
The wpForo Forum plugin before 2.1.9 has a Reflected XSS vulnerability when debug mode is enabled, due to insufficient parameter escaping.
Vulnerability
The wpForo Forum plugin for WordPress, versions prior to 2.1.9, does not escape certain request parameters when debug mode is active. This leads to a Reflected Cross-Site Scripting (XSS) vulnerability [1]. The issue is present in all versions before 2.1.9.
Exploitation
An attacker can craft a malicious link containing a payload in a request parameter that is not sanitized. The user must have debug mode enabled in the plugin (which is typically not default) and click the link. The attacker does not need authentication; the vulnerability is exploited via a reflected XSS attack where the malicious payload is immediately reflected back in the response.
Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's browser session on the WordPress site. This can lead to session hijacking, defacement, or theft of sensitive information. The CVSS score is 7.5 (high) [1].
Mitigation
The vulnerability is fixed in version 2.1.9 of the wpForo Forum plugin. Users should update to this version or later. Workarounds include disabling debug mode if it is not needed. No other workarounds are known [1].
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: <2.1.9
Patches
0No patches discovered yet.
Vulnerability mechanics
Root cause
"The plugin does not escape some request parameters while in debug mode, leading to a Reflected Cross-Site Scripting vulnerability [ref_id=1]."
Attack vector
An attacker can craft a malicious URL containing unescaped request parameters that the wpForo Forum plugin reflects back in the page when debug mode is enabled [ref_id=1]. The vulnerability is classified as Reflected XSS [CWE-79], meaning the payload is delivered via a link that the victim must click. No authentication is required because the debug-mode output is server-side and accessible to any visitor. The attack vector is a crafted HTTP request with a JavaScript payload in a parameter that the plugin outputs without proper escaping [ref_id=1].
Affected code
The advisory does not specify exact file paths or function names. The vulnerability exists in the wpForo Forum plugin's debug-mode output handling, where request parameters are reflected without escaping [ref_id=1].
What the fix does
The advisory states the vulnerability is fixed in version 2.1.9 of the wpForo Forum plugin [ref_id=1]. No patch diff is provided in the bundle, but the remediation involves properly escaping request parameters before outputting them when debug mode is active. The fix closes the XSS hole by ensuring that any parameter values rendered in debug output are sanitized or escaped, preventing injection of arbitrary HTML and JavaScript [ref_id=1].
Preconditions
- configThe wpForo Forum plugin must have debug mode enabled.
- inputThe victim must click a crafted link or visit a malicious URL.
Reproduction
The advisory at [ref_id=1] does not include reproduction steps beyond stating that the plugin does not escape request parameters while in debug mode. No public PoC with specific payload or URL structure is provided in the bundle.
Generated on May 26, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
1- wpscan.com/vulnerability/1b3f4558-ea41-4749-9aa2-d3971fc9ca0dmitreexploitvdb-entrytechnical-description
News mentions
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