CVE-2001-1379: The PostgreSQL authentication modules (1) mod_auth_pgsql 0.9.5, and (2) mod_auth_pgsql_sys 0.9.4, allow remote

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HIGH 7.5DOWNGRADE

CVE-2001-1379 is a high-severity flaw (CVSS 7.5) affecting mod auth pgsql. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The PostgreSQL authentication modules (1) mod_auth_pgsql 0.9.5, and (2) mod_auth_pgsql_sys 0.9.4, allow remote attackers to bypass authentication and execute arbitrary SQL via a SQL injection attack on the user name.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Published	2001-08-29
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: guiseppe tanzilli and matthias eckermann

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

Am I affected?

Timeline

2001-08-29 04:00 UTCPublished CVE record published
2026-06-16 21:56 UTCUpdated Record last modified

guiseppe tanzilli and matthias eckermann mod auth pgsql DOWNGRADE

Affected: 0.9.5 · 0.9.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.9.5

1. Check installed version

apt-cache policy mod-auth-pgsql || rpm -q mod-auth-pgsql || mod-auth-pgsql --version

2. No fixed release: DOWNGRADE to a release before 0.9.5 (Debian / Ubuntu)

apt-cache madison mod-auth-pgsql sudo apt install mod-auth-pgsql=<VERSION_BEFORE_0.9.5> sudo apt-mark hold mod-auth-pgsql

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

dnf --showduplicates list mod-auth-pgsql sudo dnf downgrade mod-auth-pgsql-<VERSION_BEFORE_0.9.5> sudo dnf versionlock add mod-auth-pgsql

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-2001-1379?

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

Is CVE-2001-1379 being exploited?

CVE-2001-1379 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-2001-1379 affect?

CVE-2001-1379 affects mod auth pgsql. Severity is high (CVSS 7.5). The PostgreSQL authentication modules (1) mod_auth_pgsql 0.9.5, and (2) mod_auth_pgsql_sys 0.9.4, allow remote attackers to bypass authentication and execute arbitrary SQL via a SQL injection attack on the user name.

How urgent is CVE-2001-1379?

Priority 46/100. High severity

Software pages

PostgreSQL vulnerabilities

Related CVEs

CVE-2005-3656 HIGH 10.0 UPGRADE Multiple format string vulnerabilities in logging functions in mod_auth_pgsql before 2.0.3, when used for user

References

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