CVE-2025-27309
Published: 17 April 2025
Summary
CVE-2025-27309 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 stored cross-site scripting flaw (CWE-79) caused by improper neutralization of input during web page generation. It affects the flickr-slideshow-wrapper WordPress plugin in all versions through 5.4.6.
An unauthenticated attacker can supply malicious input that is stored by the plugin and later executed in the browsers of visitors who view affected pages. Successful exploitation yields limited impacts on confidentiality, integrity, and availability with a changed scope, as reflected in the CVSS 7.1 rating that requires user interaction but no privileges.
The issue is documented by Patchstack, which identifies the affected plugin versions and provides a public record of the stored XSS weakness. No further mitigation details such as a specific fixed version or configuration guidance appear in the available references.
EPSS remains low, with a current score of 0.0067 and a peak of 0.0111.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-11631
Vulnerability details
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jeannot Muller flickr-slideshow-wrapper flickr-slideshow-wrapper allows Stored XSS.This issue affects flickr-slideshow-wrapper: from n/a through <= 5.4.6.
- 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.