CVE-2025-26552
Published: 13 February 2025
Summary
CVE-2025-26552 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 at the 32.1th 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-2025-26552 is an Improper Neutralization of Input During Web Page Generation vulnerability, classified as Stored Cross-Site Scripting (CWE-79), in the Naver Syndication V2 WordPress plugin (badr-naver-syndication) developed by badrHan. This issue affects all versions of the plugin up to and including 0.8.3. The vulnerability has 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 high severity due to network accessibility, low attack complexity, no required privileges, user interaction, and scope change with low impacts on confidentiality, integrity, and availability.
An unauthenticated attacker can exploit this vulnerability over the network by tricking a site user, typically an administrator, into performing an action that injects a malicious script via Cross-Site Request Forgery (CSRF) leading to stored XSS. Once stored, the payload executes in the browser context of subsequent users viewing the affected page, enabling potential theft of session cookies, account takeover, or further site compromise within the victim's privileges.
The Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/badr-naver-syndication/vulnerability/wordpress-naver-syndication-v2-plugin-0-8-3-csrf-to-stored-cross-site-scripting-vulnerability?_s_id=cve) documents the CSRF-to-Stored XSS issue in Naver Syndication V2 version 0.8.3. Mitigation involves updating the plugin to a version beyond 0.8.3, where the vulnerability is no longer present, and applying general WordPress best practices such as disabling unused plugins and enabling content security policies.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-4219
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in badrHan Naver Syndication V2 badr-naver-syndication allows Stored XSS.This issue affects Naver Syndication V2: from n/a through <= 0.8.3.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stored XSS vulnerability in a public-facing WordPress plugin directly enables exploitation of public-facing applications (T1190) via network-accessible CSRF injection leading to persistent client-side script execution.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-10 requires validation of information inputs, directly addressing the improper neutralization of input that enables stored XSS injection in the Naver Syndication V2 plugin.
SI-15 mandates output filtering, preventing the execution of stored malicious scripts generated during web page rendering from the vulnerable plugin.
SI-2 ensures timely flaw remediation through patching, mitigating the specific vulnerability in Naver Syndication V2 versions up to 0.8.3.