XSS in Altn Mdaemon
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (58.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.altn.com/Support/SecurityUpdate/MD011221_MDaemon_EN/ (Patch, Vendor Advisory)
- github.com/chudyPB/MDaemon-Advisories (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27180?
- CVE-2021-27180 is a medium-severity vulnerability in Altn Mdaemon, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-04-14.
- How severe is CVE-2021-27180?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-27180 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.