CVE-2021-27180
MEDIUMCVSS 6.1/10EPSS 0.93%
Last modified
CVE-2021-27180 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An issue was discovered in MDaemon before 20.0.4. There is Reflected XSS in Webmail (aka WorldClient). EPSS estimates a 0.93% chance of exploitation in the next 30 days.
Description
An issue was discovered in MDaemon before 20.0.4. There is Reflected XSS in Webmail (aka WorldClient). It can be exploited via a GET request. It allows performing any action with the privileges of the attacked user.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Altn | Mdaemon | < 20.0.4 |
References
- https://github.com/chudyPB/MDaemon-AdvisoriesExploit, Third Party Advisory
- https://www.altn.com/Support/SecurityUpdate/MD011221_MDaemon_EN/Patch, Vendor Advisory
- https://github.com/chudyPB/MDaemon-AdvisoriesExploit, Third Party Advisory
- https://www.altn.com/Support/SecurityUpdate/MD011221_MDaemon_EN/Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-27180?
An issue was discovered in MDaemon before 20.0.4. There is Reflected XSS in Webmail (aka WorldClient). It can be exploited via a GET request. It allows performing any action with the privileges of the attacked user.
How severe is CVE-2021-27180?
CVE-2021-27180 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27180?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-27180?
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