XSS in Icewarp
CVE-2018-25269
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.
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: 0.002 (12.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Icewarp — versions 11.0.0.0
- Icewarp Client — versions 10.3.4, 11.0.0.0
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/45974 (Exploit, VDB Entry, exploit)
- www.icewarp.com/ (Product, product)
- www.vulncheck.com/advisories/icewarp-cross-site-scripting-via-email-html-inject… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2018-25269?
- CVE-2018-25269 is a medium-severity vulnerability in Icewarp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-22.
- How severe is CVE-2018-25269?
- Medium severity. CVSS v3 base score is 6.1 out of 10.