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CVE-2003-0040: SQL injection vulnerability in the PostgreSQL auth module for courier 0.40 and earlier allows remote attackers

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HIGH 7.5DOWNGRADEDOWNGRADE

CVE-2003-0040 is a high-severity flaw (CVSS 7.5) affecting courier mta, courier-imap. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SQL injection vulnerability in the PostgreSQL auth module for courier 0.40 and earlier allows remote attackers to execute SQL code via the user name.

Why this priority

  • High severity

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

Risk facts

CVSS score7.5 (High)
EPSS exploit chance1.2% (top 31%)
CISA exploited listNo
Published2003-02-19
Last modified2026-06-16
Publisher (CNA): MITRE · Vendor: double precision incorporated · inter7

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

Am I affected?

Timeline

double precision incorporated courier mta DOWNGRADE
Affected: 0.37.3
Fixed in: no fixed release known
Safe to downgrade to: a release before 0.37.3
1. Check installed version
apt-cache policy courier-mta || rpm -q courier-mta || courier-mta --version
2. No fixed release: DOWNGRADE to a release before 0.37.3 (Debian / Ubuntu)
apt-cache madison courier-mta sudo apt install courier-mta=<VERSION_BEFORE_0.37.3> sudo apt-mark hold courier-mta
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list courier-mta sudo dnf downgrade courier-mta-<VERSION_BEFORE_0.37.3> sudo dnf versionlock add courier-mta
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.
inter7 courier-imap DOWNGRADE
Affected: 1.6
Fixed in: no fixed release known
Safe to downgrade to: a release before 1.6
1. Check installed version
apt-cache policy courier-imap || rpm -q courier-imap || courier-imap --version
2. No fixed release: DOWNGRADE to a release before 1.6 (Debian / Ubuntu)
apt-cache madison courier-imap sudo apt install courier-imap=<VERSION_BEFORE_1.6> sudo apt-mark hold courier-imap
2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list courier-imap sudo dnf downgrade courier-imap-<VERSION_BEFORE_1.6> sudo dnf versionlock add courier-imap
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.
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-2003-0040?

courier mta: downgrade or apply the listed mitigation; courier-imap: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2003-0040 being exploited?

CVE-2003-0040 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-2003-0040 affect?

CVE-2003-0040 affects courier mta, courier-imap. Severity is high (CVSS 7.5). SQL injection vulnerability in the PostgreSQL auth module for courier 0.40 and earlier allows remote attackers to execute SQL code via the user name.

How urgent is CVE-2003-0040?

Priority 43/100. High severity

Software pages

PostgreSQL vulnerabilities

Related CVEs

References

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