ICEWARP 11.0.0.0 Cross-Site Scripting via Email HTML Injection
Published Apr 22, 2026
5.1
MEDIUMCVSS 4.0
EPSS 0.23%
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
-
- Version 10.3.4StatusaffectedConstraints-
- Version 11.0.0.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Icewarp | ICEWARP Client | n/a |
|
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
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
1 other source (NVD) ▾
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 22, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
Apr-Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.23% (0.00230) | 12.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.23% (0.00230) | 13.53th | v5 (v2026.06.15) |
| Apr 23, 2026 | 0.03% (0.00029) | 8.29th | v4 (v2025.03.14) |
References (3)
- http://www.icewarp.com/ product
- https://www.exploit-db.com/exploits/45974 exploitVDB Entry
- https://www.vulncheck.com/advisories/icewarp-cross-site-scripting-via-email-html-injection third-party-advisoryThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.icewarp.com/ | product | |
| https://www.exploit-db.com/exploits/45974 | exploitVDB Entry | |
| https://www.vulncheck.com/advisories/icewarp-cross-site-scripting-via-email-html-injection | third-party-advisoryThird Party Advisory |
Change history (0)
No recorded changes yet.