CVE-2026-78834

8.8 highEPSS 0.7%

High (8.8). EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWE: CWE-94
Published: 2026-09-08
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://gist.github.com/AEQ3/574cb644306776a9ff1a0de30b085e62
https://github.com/AEQ3/CVE/issues/1

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