What is CVE-2026-1097?

CVE-2026-1097 is a medium-severity vulnerability in Themeruby Multi Authors – Assign Multiple Writers To Posts, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-01-24.

How severe is CVE-2026-1097?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Themeruby Multi Authors – Assign Multiple Writers To Posts

CVE-2026-1097

The ThemeRuby Multi Authors – Assign Multiple Writers to Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'before' and 'after' shortcode attributes in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (15.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Themeruby Multi Authors – Assign Multiple Writers To Posts — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-1097?: CVE-2026-1097 is a medium-severity vulnerability in Themeruby Multi Authors – Assign Multiple Writers To Posts, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-01-24.
How severe is CVE-2026-1097?: Medium severity. CVSS v3 base score is 6.4 out of 10.