CVE-2005-3656

What it is

Multiple format string vulnerabilities in logging functions in mod_auth_pgsql before 2.0.3, when used for user authentication against a PostgreSQL database, allows remote unauthenticated attackers to execute arbitrary code, as demonstrated via the username.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.

Exploit odds

8.9% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2005-12-31 05:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 8.9% in the next 30 days (EPSS).
• Severity: 10.0 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2005-12-31 05:00 UTC

Last modified

2026-06-16 22:17 UTC

Exploit probability

8.9% · EPSS, next 30 days

Weakness

CWE-134

Record status

Modified

Affected

• Guiseppe Tanzilli And Matthias Eckermann Mod Auth Pgsql ≤ 2.0.3
• Guiseppe Tanzilli And Matthias Eckermann Mod Auth Pgsql 0.9.5
• Guiseppe Tanzilli And Matthias Eckermann Mod Auth Pgsql 0.9.6

Attack profile CVSS 2.0 · 10.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Is it in your code?

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