CVE-2026-78237 Insufficient input validation in Admin By Request (ABR)
A low-privileged user can inject malicious entries into the sudoers file to gain persistent root access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78237?
CVE-2026-78237 is a high-severity vulnerability in Admin By Request (ABR), published on 26 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-20
Which versions are affected by CVE-2026-78237?
How do I fix CVE-2026-78237?
No fix has been published for CVE-2026-78237 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-78237 being exploited?
There is no known exploitation of CVE-2026-78237 in the wild and no public exploit code.
Sources
Also known as GHSA-9v6j-cr5f-p2gx.