CVE-2026-72590: alseambusher crontab-ui · CRLF Injection
Affects alseambusher crontab-uiSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 7 Nov 2026, 23:24 UTC
- EPSS
- 2.0% chance of exploitation in 30 days – higher than 81% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| alseambushercrontab-ui | Affected
| Fixed in– |
AI-suggested
Until a fix is available, restrict access to the /crontab endpoint and monitor for suspicious requests containing URL-encoded newline characters in the env_vars parameter.
Description
CVE-2026-72590 is a critical OS command injection vulnerability in alseambusher's crontab-ui up to version 0.4.2. It allows an unauthenticated remote attacker to inject arbitrary cron job entries by sending a specially crafted GET request with URL-encoded newline characters in the env_vars parameter to the /crontab endpoint.