CVE-2025-23531
Published: 27 January 2025
Summary
CVE-2025-23531 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Browser Session Hijacking (T1185); ranked at the 23.9th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-15 (Information Output Filtering).
Deeper analysis
CVE-2025-23531 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Reflected Cross-site Scripting (XSS) under CWE-79, in the RSVPMaker Volunteer Roles WordPress plugin (rsvpmaker-volunteer-roles) developed by davidfcarr. This issue affects all versions of the plugin from unknown initial release through 1.5.1.
The vulnerability carries a CVSS v3.1 base score of 7.1 (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L), indicating network accessibility, low attack complexity, no required privileges, and user interaction such as clicking a malicious link. Unauthenticated attackers can exploit it by crafting payloads reflected in web pages, achieving low impacts on confidentiality, integrity, and availability within a changed scope, potentially allowing session hijacking or script execution in victims' browsers.
Patchstack's advisory at https://patchstack.com/database/Wordpress/Plugin/rsvpmaker-volunteer-roles/vulnerability/wordpress-rsvpmaker-volunteer-roles-plugin-1-5-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve documents the Reflected XSS in RSVPMaker Volunteer Roles up to version 1.5.1, with mitigation centered on updating to a patched version of the plugin.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-3232
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in davidfcarr RSVPMaker Volunteer Roles rsvpmaker-volunteer-roles allows Reflected XSS.This issue affects RSVPMaker Volunteer Roles: from n/a through <= 1.5.1.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS directly enables arbitrary JavaScript execution in the victim's browser (T1059.007) and session hijacking via cookie theft or script injection (T1185).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-2 Flaw Remediation directly addresses this CVE by requiring identification, reporting, and patching of the reflected XSS vulnerability in the RSVPMaker Volunteer Roles plugin.
SI-15 Information Output Filtering mitigates reflected XSS by ensuring malicious payloads reflected during web page generation are filtered and not executed in users' browsers.
SI-10 Information Input Validation prevents the improper neutralization of input by validating and sanitizing user-supplied data before web page generation in the plugin.