RCE in N/a

CVE-2026-78834

A code execution vulnerability exists in CMSimple 5.22 in the CoAuthors plugin. An authenticated low-privileged user who can modify page content and provide controlled imported content can trigger server-side execution by referencing crafted external or uploaded text content through the affected content import feature.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • N/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-78834?
CVE-2026-78834 is a high-severity vulnerability in N/a, classified under Code Injection. CVSS score: 8.8/10. Published 2026-09-08.
How severe is CVE-2026-78834?
High severity. CVSS v3 base score is 8.8 out of 10.