CVE-2025-28877
Published: 26 March 2025
Summary
CVE-2025-28877 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 Exploit Public-Facing Application (T1190); ranked in the top 38.9% of CVEs by exploit likelihood; 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Information Output Filtering directly prevents reflected XSS by encoding or filtering user input reflected in web page generation, addressing the improper neutralization flaw in the Key4ce osTicket Bridge plugin.
Information Input Validation rejects or sanitizes malicious inputs before they are processed and reflected, mitigating the CWE-79 vulnerability in the plugin.
Flaw Remediation ensures timely patching or updating of the vulnerable Key4ce osTicket Bridge plugin (versions <=1.4.0) to eliminate the reflected XSS issue.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Reflected XSS in public-facing WordPress plugin enables exploitation via malicious links (T1204.001) delivering JavaScript payloads (T1059.007) for session cookie theft (T1539) after exploiting the web app vuln (T1190).
NVD Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in m.tiggelaar Key4ce osTicket Bridge key4ce-osticket-bridge allows Reflected XSS.This issue affects Key4ce osTicket Bridge: from n/a through <= 1.4.0.
Deeper analysisAI
CVE-2025-28877 is an Improper Neutralization of Input During Web Page Generation vulnerability, enabling Reflected Cross-Site Scripting (XSS) as classified under CWE-79. It affects the Key4ce osTicket Bridge WordPress plugin (key4ce-osticket-bridge), developed by m.tiggelaar, in all versions from n/a through 1.4.0. The issue was published on 2025-03-26 with 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).
Attackers can exploit this vulnerability remotely over the network with low complexity and no required privileges, though it demands user interaction such as clicking a malicious link. Successful exploitation leverages the changed scope (S:C) to achieve low impacts on confidentiality, integrity, and availability, potentially allowing theft of session cookies, user data, or execution of scripts in the victim's browser context.
The primary advisory from Patchstack details the Reflected XSS in the Key4ce osTicket Bridge WordPress plugin up to version 1.4.0 and is available at https://patchstack.com/database/Wordpress/Plugin/key4ce-osticket-bridge/vulnerability/wordpress-key4ce-osticket-bridge-plugin-1-4-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve. Security practitioners should review it for recommended patches, workarounds, or updates beyond version 1.4.0.
Details
- CWE(s)