CVE-2025-27354
Published: 17 April 2025
Summary
CVE-2025-27354 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 7.1 (High).
Operationally, ranked in the top 28.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The vulnerability is a reflected cross-site scripting flaw (CWE-79) in the Simple Email Subscriber WordPress plugin. It stems from improper neutralization of input during web page generation and affects all versions through 2.3.
An unauthenticated remote attacker can supply a crafted request that is reflected back to a victim user; successful exploitation executes attacker-controlled script in the victim's browser within the context of the affected site, resulting in limited impacts to confidentiality, integrity, and availability.
The single available advisory reference points to a Patchstack entry that catalogs the reflected XSS issue but supplies no further mitigation details in the provided data. The associated EPSS scores remain low throughout the observed period and exhibit only minor fluctuation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-11644
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in phil88530 Simple Email Subscriber simple-email-subscriber allows Reflected XSS.This issue affects Simple Email Subscriber: from n/a through <= 2.3.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.