What is CVE-2026-88993?

CVE-2026-88993 is a medium-severity vulnerability in All Bootstrap Blocks, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-09-18.

How severe is CVE-2026-88993?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in All Bootstrap Blocks

CVE-2026-88993

The All Bootstrap Blocks WordPress plugin through 1.3.31 does not properly escape a block attribute before outputting it in HTML tag-name position, allowing users with Contributor-level access and above to inject arbitrary web scripts that execute when the affected content is viewed.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

Affected products

Unknown All Bootstrap Blocks

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-88993?: CVE-2026-88993 is a medium-severity vulnerability in All Bootstrap Blocks, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-09-18.
How severe is CVE-2026-88993?: Medium severity. CVSS v3 base score is 6.8 out of 10.