Description
ICEWARP 10.3.4 and 11.0.0.0 contains a cross-site scripting vulnerability that allows attackers to inject malicious HTML elements into emails by embedding base64-encoded payloads in object and embed tags. Attackers can craft emails containing data URIs with embedded scripts that execute in the client when the email is viewed, compromising user sessions and stealing sensitive information.
Affected products
icewarp: icewarp
References3
- www.exploit-db.com/exploits/45974 ExploitVDB Entry
- www.icewarp.com/ Product
- www.vulncheck.com/advisories/icewarp-cross-site-scripting-via-e… Third Party Advisory
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 4.0
-
5.1
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 14 · as of 13 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.