What is CVE-2026-78237?

CVE-2026-78237 is a high-severity vulnerability, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2026-08-26.

How severe is CVE-2026-78237?

High severity. CVSS v3 base score is 7.8 out of 10.

CVE-2026-78237

CVE-2026-78237

Insufficient input validation in ABR allows a low-privileged user to inject malicious entries into the sudoers file, resulting in persistent root access that remained effective after the ABR session ended.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.001 (2.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
5f57b9bf-260d-4433-bf07-b6a79e9bb7d4 (vendor-advisory)

Frequently asked questions

What is CVE-2026-78237?: CVE-2026-78237 is a high-severity vulnerability, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2026-08-26.
How severe is CVE-2026-78237?: High severity. CVSS v3 base score is 7.8 out of 10.