Go to homepageCyberStrike

Menu

Star on GitHub · 3.4k
Sign inDownload

CVE-2026-49243

9.6 · CRITICAL

Webmin is a web-based system administration tool for Unix-like servers.

Published Sep 29, 2026CWE-79EPSS 0.30%

Overview

CVE-2026-49243 is a critical-severity vulnerability. It was published on September 29, 2026 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.650, Webmin users who click on a malicious link to their server are vulnerable to this XSS vulnerability that could be used to execute attacker-controlled commands. This issue has been patched in version 2.650.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbeaksec.github.io/posts/webmin-one-click-rce-via-xssGitHubgithub.com/webmin/webmin/commit/2d016751399ed0f4159e72a6cbcd63694a84dabfGitHubgithub.com/webmin/webmin/releases/tag/2.650GitHubgithub.com/webmin/webmin/security/advisories/GHSA-hv4w-p8jq-2rp5

How CyberStrike helps

Frequently asked questions

What is CVE-2026-49243?

CVE-2026-49243 is a critical-severity vulnerability. It was published on September 29, 2026 and has a CVSS 3.1 base score of 9.6 (CRITICAL).

How severe is CVE-2026-49243?

This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-49243?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-49243?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-49243 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related CRITICAL CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
CyberStrike v2 is here — more intelligence, greater reach