CVE-2003-0278: Cross-site scripting (XSS) vulnerability in normal_html.cgi in Happycgi.com Happymall 4.3 and 4.4 allows remot

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MEDIUM 6.8DOWNGRADE

CVE-2003-0278 is a medium-severity flaw (CVSS 6.8) affecting happymall. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in normal_html.cgi in Happycgi.com Happymall 4.3 and 4.4 allows remote attackers to insert arbitrary web script via the file parameter.

Why this priority

EPSS top 10%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	6.8 (Medium)
EPSS exploit chance	3.9% (top 10%)
CISA exploited list	No
Published	2003-06-16
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: happycgi.com

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

Am I affected?

Timeline

2003-06-16 04:00 UTCPublished CVE record published
2026-06-16 22:01 UTCUpdated Record last modified

happycgi.com happymall DOWNGRADE

Affected: 4.3 · 4.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.3

1. Check installed version

apt-cache policy happymall || rpm -q happymall || happymall --version

2. No fixed release: DOWNGRADE to a release before 4.3 (Debian / Ubuntu)

apt-cache madison happymall sudo apt install happymall=<VERSION_BEFORE_4.3> sudo apt-mark hold happymall

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

dnf --showduplicates list happymall sudo dnf downgrade happymall-<VERSION_BEFORE_4.3> sudo dnf versionlock add happymall

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: Happymall E-Commerce Software 4.3/4.4 - 'Normal_HTML.cgi' 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-2003-0278?

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

Is CVE-2003-0278 being exploited?

CVE-2003-0278 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-2003-0278 affect?

CVE-2003-0278 affects happymall. Severity is medium (CVSS 6.8). Cross-site scripting (XSS) vulnerability in normal_html.cgi in Happycgi.com Happymall 4.3 and 4.4 allows remote attackers to insert arbitrary web script via the file parameter.

How urgent is CVE-2003-0278?

Priority 51/100. EPSS top 10%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2003-0277 MEDIUM 5.0 DOWNGRADE Directory traversal vulnerability in normal_html.cgi in Happycgi.com Happymall 4.3 and 4.4 allows remote attac
CVE-2003-0243 HIGH 7.5 DOWNGRADE Happycgi.com Happymall 4.3 and 4.4 allows remote attackers to execute arbitrary commands via shell metacharact

References

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