An OS command injection vulnerability in alseambusher/crontab-ui through 0.4.2 allows an unauthenticated remote attacker to inject arbitrary cron… (CVE-2026-72590)
An OS command injection vulnerability exists in alseambusher/crontab-ui through version 0.4.2. This flaw allows an unauthenticated remote attacker to inject arbitrary cron job entries by sending a crafted GET request to the /crontab endpoint with URL-encoded newlines in the env_vars parameter. The vulnerability has a critical severity with a CVSS score of 9.8.
AI Analysis
Technical Summary
CVE-2026-72590 is an OS command injection vulnerability in the crontab-ui project by alseambusher, affecting all versions through 0.4.2. An unauthenticated remote attacker can exploit this by sending a specially crafted GET request to the /crontab endpoint, injecting arbitrary cron job entries via URL-encoded newline characters in the env_vars parameter. This vulnerability allows full control over cron jobs, potentially leading to arbitrary code execution with the privileges of the application.
Potential Impact
Successful exploitation allows an unauthenticated attacker to inject arbitrary cron jobs, which can lead to arbitrary code execution, complete system compromise, and full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability at a critical level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently provided. Until a patch is available, restrict access to the /crontab endpoint and monitor for suspicious requests targeting this parameter.
An OS command injection vulnerability in alseambusher/crontab-ui through 0.4.2 allows an unauthenticated remote attacker to inject arbitrary cron… (CVE-2026-72590)
Description
An OS command injection vulnerability exists in alseambusher/crontab-ui through version 0.4.2. This flaw allows an unauthenticated remote attacker to inject arbitrary cron job entries by sending a crafted GET request to the /crontab endpoint with URL-encoded newlines in the env_vars parameter. The vulnerability has a critical severity with a CVSS score of 9.8.
CVSS v3.1
Score 9.8critical
Affected software
pkg:github/alseambusher/crontab-uiRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-72590 is an OS command injection vulnerability in the crontab-ui project by alseambusher, affecting all versions through 0.4.2. An unauthenticated remote attacker can exploit this by sending a specially crafted GET request to the /crontab endpoint, injecting arbitrary cron job entries via URL-encoded newline characters in the env_vars parameter. This vulnerability allows full control over cron jobs, potentially leading to arbitrary code execution with the privileges of the application.
Potential Impact
Successful exploitation allows an unauthenticated attacker to inject arbitrary cron jobs, which can lead to arbitrary code execution, complete system compromise, and full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability at a critical level.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are currently provided. Until a patch is available, restrict access to the /crontab endpoint and monitor for suspicious requests targeting this parameter.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-25qx-69jj-jfcj
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-72590"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a79f0cabf8831d539f606d9
Added to database: 08/10/2026, 15:39:54 UTC
Last enriched: 08/10/2026, 15:48:01 UTC
Last updated: 08/10/2026, 22:40:59 UTC
Views: 2
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