CVE-2020-8512: In IceWarp Webmail Server through 11.4.4.1, there is XSS in the /webmail/ color parameter.

Q: How do I fix CVE-2020-8512?

icewarp server: upgrade to newer than 11.4.4.1. Exact commands for each OS are on this page.

Q: Is CVE-2020-8512 being exploited?

CVE-2020-8512 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-8512 affect?

CVE-2020-8512 affects icewarp server. Severity is medium (CVSS 6.1). In IceWarp Webmail Server through 11.4.4.1, there is XSS in the /webmail/ color parameter.

Q: How urgent is CVE-2020-8512?

Priority 51/100. EPSS top 3%: very likely to be exploited; Public exploit reference

This week

MEDIUM 6.1UPGRADE

CVE-2020-8512 is a medium-severity flaw (CVSS 6.1) affecting icewarp server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In IceWarp Webmail Server through 11.4.4.1, there is XSS in the /webmail/ color parameter.

Why this priority

EPSS top 3%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	14.8% (top 3%)
CISA exploited list	No
Weakness	CWE-79
Published	2020-02-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: icewarp

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-02-01 00:15 UTCPublished CVE record published
2026-06-17 03:26 UTCUpdated Record last modified

icewarp icewarp server UPGRADE

Affected: <= 11.4.4.1

Fixed in: newer than 11.4.4.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy icewarp-server || rpm -q icewarp-server || icewarp-server --version

2. UPGRADE to newer than 11.4.4.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade icewarp-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade icewarp-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: IceWarp WebMail 11.4.4.1 - Reflective Cross-Site Scripting
Nuclei scan template: IceWarp WebMail Server <=11.4.4.1 - Cross-Site Scripting

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-8512?

icewarp server: upgrade to newer than 11.4.4.1. Exact commands for each OS are on this page.

Is CVE-2020-8512 being exploited?

CVE-2020-8512 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-8512 affect?

CVE-2020-8512 affects icewarp server. Severity is medium (CVSS 6.1). In IceWarp Webmail Server through 11.4.4.1, there is XSS in the /webmail/ color parameter.

How urgent is CVE-2020-8512?

Priority 51/100. EPSS top 3%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2021-36580 MEDIUM 6.1 UPGRADE UPGRADE Open Redirect vulnerability exists in IceWarp MailServer IceWarp Server Deep Castle 2 Update 1 (13.0.1.2) via

References

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