MDaemon Email Server Cross-Site Scripting (XSS) Vulnerability
MDaemon · Email Server
MDaemon Email Server, prior to version 24.5.1c, contains a cross-site scripting flaw in its webmail interface that stems from improper neutralization of input during web page generation. An attacker who can send an HTML e-mail containing JavaScript inside an img tag, with the victim user interacting with the message in webmail, can execute arbitrary JavaScript in that user's browser session without needing authentication to the server.
An XSS issue was discovered in MDaemon Email Server before version 24.5.1c. An attacker can send an HTML e-mail message with JavaScript in an img tag. This could allow a remote attacker to load arbitrary JavaScript code in the context of a webmail user's browser window.
- Exploited
- Yes, in CISA KEV
- Reports
- 0
- Tactics
- 3/15
How an attack unfolds
Based on MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. mappings. Select a step to see the evidence.Exploitation timelineDated milestones for a CVE: when it was disclosed, when exploit code became public, when exploitation was confirmed, and when threat reports named it.
First seen exploited 6 months after disclosure.
- Disclosedday 0
- First seen exploitedVulnCheck KEV evidence+6 mo
- Added to CISA KEVEU database agrees+6 mo
CISA KEV listing is when exploitation was confirmed, not necessarily the first attack.
MITRE ATT&CKA public catalogue of the techniques attackers use, maintained by MITRE. Patchfirst uses it to describe what attackers do with a vulnerability. techniques
3 TechniqueOne specific attacker behaviour in MITRE ATT&CK, such as T1190 “Exploit Public-Facing Application”. IDs with a dot, like T1059.004, are sub-techniques., grouped by TacticThe attacker’s goal at a stage of an attack in MITRE ATT&CK, such as Initial Access or Persistence. Each technique belongs to one or more tactics. in kill-chain order 3Initial AccessTA0001
Threat actors can use spearphishing to deliver a malicious JavaScript payload, which then allows exfiltration of sensitive data from the email servers.
ExecutionTA0002
ExfiltrationTA0010
Detection
0 rules for this CVE · 121 general rules for its techniquesRules for this CVE
0Sigma ruleAn open, vendor-neutral detection rule for log data. Security teams convert Sigma rules into searches for their own SIEM. that reference CVE-2024-11182 directly.CVE-specific rules are not available in this build. Search SigmaHQ ↗
General rules for this CVE’s techniques
These detect the technique in general, not this specific vulnerability.
PhishingT156614 general rules
- CVE-2021-31979 CVE-2021-33771 Exploitscriticaltest
- CVE-2021-31979 CVE-2021-33771 Exploits by Sourgumcriticaltest
- HTML Help HH.EXE Suspicious Child Processhightest
- Okta FastPass Phishing Detectionhightest
- Phishing Pattern ISO in Archivehightest
- Potential Malicious Usage of CloudTrail System Managerhightest
- Suspicious External WebDAV Executionhightest
- Suspicious HH.EXE Executionhightest
Command and Scripting InterpreterT105995 general rules
- HackTool - Sliver C2 Implant Activity Patterncriticaltest
- Lazarus Group Activitycriticaltest
- REvil Kaseya Incident Malware Patternscriticaltest
- Turla Group Lateral Movementcriticaltest
- Windows Defender AMSI Trigger Detectedhighstable
- Windows Defender Threat Detectedhighstable
- Abusable DLL Potential Sideloading From Suspicious Locationhightest
- Add Insecure Download Source To Wingethightest
Exfiltration Over Web ServiceT156712 general rules
- Monero Crypto Coin Mining Pool Lookuphighstable
- Communication To Ngrok Tunneling Service - Linuxhightest
- Communication To Ngrok Tunneling Service Initiatedhightest
- Process Initiated Network Connection To Ngrok Domainhightest
- Arbitrary File Download Via ConfigSecurityPolicy.EXEmediumtest
- LOLBAS Data Exfiltration by DataSvcUtil.exemediumtest
- Network Connection Initiated To BTunnels Domainsmediumtest
- Network Connection Initiated To Cloudflared Tunnels Domainsmediumtest
Sigma rules © SigmaHQ, Detection Rule License 1.1; linked, not reproduced.
What security researchers reported
Not named in any threat report yetAlso mentioned in 50 community threat pulses (AlienVault OTX)
Weaker evidencePulses are indicator collections that anyone can publish. A mention is not confirmation of exploitation.
- Actively_Exploited_Kev | Oct 30, 202629 Oct 2026
- Actively_Exploited_Kev | Oct 29, 202628 Oct 2026
- Actively_Exploited_Kev | Oct 28, 202627 Oct 2026
- Actively_Exploited_Kev | Oct 27, 202626 Oct 2026
- Actively_Exploited_Kev | Oct 24, 202623 Oct 2026
- Actively_Exploited_Kev | Oct 23, 202622 Oct 2026
- 44 more on OTX