CVE-2025-26951

MEDIUM 6.5

WordPress C9 Blocks plugin <= 1.7.7 - Cross Site Scripting (XSS) vulnerability

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in covertnine C9 Blocks c9-blocks allows DOM-Based XSS.This issue affects C9 Blocks: from n/a through <= 1.7.7.

CWE	CWE-79
Vendor	covertnine
Product	c9 blocks
Published	Apr 15, 2025
Last Updated	Apr 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

covertnine / C9 Blocks

0 ≤ 1.7.7

References

NVD ↗ CVE.org ↗ EPSS Data ↗

patchstack.com: https://patchstack.com/database/Wordpress/Plugin/c9-blocks/vulnerability/wordpress-c9-blocks-plugin-1-7-7-cross-site-scripting-xss-vulnerability?_s_id=cve

Credits

Gab | Patchstack Bug Bounty Program