CVE-2002-1958: Cross-site scripting (XSS) vulnerability in kmMail 1.0, 1.0a, and 1.0b allows remote attackers to inject arbit

Routine

MEDIUM 4.3DOWNGRADE

CVE-2002-1958 is a medium-severity flaw (CVSS 4.3) affecting kmmail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in kmMail 1.0, 1.0a, and 1.0b allows remote attackers to inject arbitrary web script or HTML via (1) javascript in onmouseover or other attributes in "safe" HTML tags such as the "b" tag, or (2) the Subject field.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-79
Published	2002-12-31
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kmmail

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

Am I affected?

Timeline

2002-12-31 05:00 UTCPublished CVE record published
2026-06-16 22:00 UTCUpdated Record last modified

kmmail kmmail DOWNGRADE

Affected: 1.0 · 1.0a · 1.0b

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison kmmail sudo apt install kmmail=<VERSION_BEFORE_1.0> sudo apt-mark hold kmmail

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

dnf --showduplicates list kmmail sudo dnf downgrade kmmail-<VERSION_BEFORE_1.0> sudo dnf versionlock add kmmail

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: KMMail 1.0 - E-Mail HTML Injection

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-2002-1958?

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

Is CVE-2002-1958 being exploited?

CVE-2002-1958 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-2002-1958 affect?

CVE-2002-1958 affects kmmail. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in kmMail 1.0, 1.0a, and 1.0b allows remote attackers to inject arbitrary web script or HTML via (1) javascript in onmouseover or other attributes in "safe" HTML tags such as the "b" tag, or (2) the

How urgent is CVE-2002-1958?

Priority 39/100. Public exploit reference

References

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