Cyber Posture

CVE-2025-28877

High

Published: 26 March 2025

Published
26 March 2025
Modified
23 April 2026
KEV Added
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Patch
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CVSS Score 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
EPSS Score 0.0019 40.0th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Description

An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.

Security Summary

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)
CWE-79

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1204.001 Malicious Link Execution
An adversary may rely upon a user clicking a malicious link in order to gain execution.
attack.mitre.org →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
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).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

References