CVE-2025-31379
Published: 11 April 2025
Summary
CVE-2025-31379 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 CVE-2025-31379 is a reflected cross-site scripting flaw (CWE-79) caused by improper neutralization of input during web page generation. It affects the Insert HTML Here WordPress plugin in all versions through 1.0 and carries a CVSS 3.1 score of 7.1.
An unauthenticated remote attacker can exploit the issue by supplying a crafted URL that triggers script execution in a victim's browser when the link is visited. Successful exploitation allows limited impacts to confidentiality, integrity, and availability within the context of the vulnerable site.
The vulnerability was catalogued by Patchstack, whose advisory at the referenced URL provides further details for affected site owners. The associated EPSS score remains low, with a current value of 0.0067 and a peak of 0.0111.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10779
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in programphases Insert HTML Here insert-html-here allows Reflected XSS.This issue affects Insert HTML Here: from n/a through <= 1.0.
- 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.