CVE-2004-2334: Multiple cross-site scripting (XSS) vulnerabilities in EMU Webmail 5.2.7 allow remote attackers to inject arbi

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MEDIUM 4.3DOWNGRADE

CVE-2004-2334 is a medium-severity flaw (CVSS 4.3) affecting emu webmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple cross-site scripting (XSS) vulnerabilities in EMU Webmail 5.2.7 allow remote attackers to inject arbitrary web script or HTML via (1) a hex-encoded value to the variable parameter in emumail.fcgi, (2) the folder parameter in emumail.fcgi, or Javascript in the (3) username or (4) password field in the login page.

Why this priority

EPSS top 8%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	4.8% (top 8%)
CISA exploited list	No
Published	2004-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: emumail

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2004-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:09 UTCUpdated Record last modified

emumail emu webmail DOWNGRADE

Affected: 5.2.7

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.2.7

1. Check installed version

apt-cache policy emu-webmail || rpm -q emu-webmail || emu-webmail --version

2. No fixed release: DOWNGRADE to a release before 5.2.7 (Debian / Ubuntu)

apt-cache madison emu-webmail sudo apt install emu-webmail=<VERSION_BEFORE_5.2.7> sudo apt-mark hold emu-webmail

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list emu-webmail sudo dnf downgrade emu-webmail-<VERSION_BEFORE_5.2.7> sudo dnf versionlock add emu-webmail

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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: Emumail EMU Webmail 5.2.7 - 'emumail.fcgi' Multiple Cross-Site Scripting Vulnerabilities

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-2004-2334?

emu webmail: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2004-2334 being exploited?

CVE-2004-2334 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-2004-2334 affect?

CVE-2004-2334 affects emu webmail. Severity is medium (CVSS 4.3). Multiple cross-site scripting (XSS) vulnerabilities in EMU Webmail 5.2.7 allow remote attackers to inject arbitrary web script or HTML via (1) a hex-encoded value to the variable parameter in emumail.fcgi, (2) the folder parameter in emumai

How urgent is CVE-2004-2334?

Priority 43/100. EPSS top 8%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2004-2385 MEDIUM 5.0 DOWNGRADE EMU Webmail 5.2.7 allows remote attackers to obtain sensitive path information (home directory) via an HTTP re
CVE-2002-1527 MEDIUM 5.0 DOWNGRADE emumail.cgi in EMU Webmail 5.0 allows remote attackers to determine the full pathname for emumail.cgi via a ma
CVE-2002-1526 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in emumail.cgi for EMU Webmail 5.0 allows remote attackers to inject

References

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