CVE-2005-1959: jammail.pl in jamchen JamMail 1.8 allows remote attackers to execute arbitrary commands via shell metacharacte

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HIGH 7.5DOWNGRADE

CVE-2005-1959 is a high-severity flaw (CVSS 7.5) affecting jammail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

jammail.pl in jamchen JamMail 1.8 allows remote attackers to execute arbitrary commands via shell metacharacters in the mail parameter.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Published	2005-06-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: jammail

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

Am I affected?

Timeline

2005-06-12 04:00 UTCPublished CVE record published
2026-06-16 22:13 UTCUpdated Record last modified

jammail jammail DOWNGRADE

Affected: 1.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.8

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 1.8 (Debian / Ubuntu)

apt-cache madison jammail sudo apt install jammail=<VERSION_BEFORE_1.8> sudo apt-mark hold jammail

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

dnf --showduplicates list jammail sudo dnf downgrade jammail-<VERSION_BEFORE_1.8> sudo dnf versionlock add jammail

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: JamMail 1.8 - Jammail.pl Arbitrary Command Execution

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-2005-1959?

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

Is CVE-2005-1959 being exploited?

CVE-2005-1959 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-2005-1959 affect?

CVE-2005-1959 affects jammail. Severity is high (CVSS 7.5). jammail.pl in jamchen JamMail 1.8 allows remote attackers to execute arbitrary commands via shell metacharacters in the mail parameter.

How urgent is CVE-2005-1959?

Priority 53/100. High severity; Public exploit reference

References

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