Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in covertnine C9 Blocks allows DOM-Based XSS. This issue affects C9 Blocks: from n/a through 1.7.7.

Classification

CVE ID: CVE-2025-26951

CVSS Base Severity: MEDIUM

CVSS Base Score: 6.5

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

Affected Products

Vendor: covertnine

Product: C9 Blocks

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 8.22% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-26951
https://patchstack.com/database/wordpress/plugin/c9-blocks/vulnerability/wordpress-c9-blocks-plugin-1-7-7-cross-site-scripting-xss-vulnerability?_s_id=cve

Timeline