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CVE-2020-18724

30
FAUCET Score

CVE-2020-18724 describes an authenticated stored cross-site scripting (XSS) vulnerability in MDaemon Webmail versions up to 19.5.5. An attacker with legitimate access can inject malicious code into the contact name field of a distribution list, which then executes when another user opens that contact list. Rated with a CVSS score of 5.4 (Medium), this vulnerability requires user interaction and authenticated access, but can lead to limited confidentiality and integrity impacts. While not actively exploited in the wild and absent from the KEV catalog, public exploit code exists on ExploitDB, though community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 20.0.1CPE matchmatch criteria
cpe:2.3:a:altn:mdaemon_webmail:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.19%
Probability of exploitation in next 30 days
EPSS Percentile
86.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-49536 · Feb 8, 2021
This CVE's current EPSS score of 0.0319 is in the 98th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kailashbohara.com.np / blog/2020/07/15/mdaemon-stored-xss
ExploitThird Party Advisory
packetstormsecurity.com / files/161332/Alt-N-MDaemon-Webmail-20.0.0-Cross-Site-Scripting.html
ExploitThird Party AdvisoryVDB Entry
altn.com / Support/SecurityUpdate/MD082520_MDaemon_EN
Vendor Advisory