CVE-2026-72589 alseambusher crontab-ui - Unauthenticated RCE via Shell Injection in Imported Database hook Field
Unauthenticated attackers can execute arbitrary system commands by uploading a malicious database file to the import endpoint.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72589?
CVE-2026-72589 is a critical command injection vulnerability in alseambusher crontab-ui, published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An OS command injection vulnerability in alseambusher/crontab-ui through 0.4.2 allows an unauthenticated remote attacker to execute arbitrary system commands by importing a crafted crontab database file. The POST /import endpoint accepts arbitrary .db files and overwrites the application database without validation.
Weakness: CWE-78
Which versions are affected by CVE-2026-72589?
How do I fix CVE-2026-72589?
No fix has been published for CVE-2026-72589 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-72589 being exploited?
There is no known exploitation of CVE-2026-72589 in the wild and no public exploit code.
Sources
Also known as GHSA-r4j6-x8h7-4f8w.