What is CVE-2026-76931?

CVE-2026-76931 is a medium-severity vulnerability in Dylanjkotze Zephyr Project Manager, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-09-08.

How severe is CVE-2026-76931?

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

XSS in Dylanjkotze Zephyr Project Manager

CVE-2026-76931

The Zephyr Project Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘message’ parameter in all versions up to, and including, 3.3.205 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability can only be exploited when the 'Directly link to project' plugin setting is disabled.

Vulnerability class: XSS (Cross-Site Scripting)

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

Dylanjkotze Zephyr Project Manager

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-76931?: CVE-2026-76931 is a medium-severity vulnerability in Dylanjkotze Zephyr Project Manager, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-09-08.
How severe is CVE-2026-76931?: Medium severity. CVSS v3 base score is 6.4 out of 10.