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.
CVE-2005-3656
This CVE was only ever scored under CVSS v2.0. NVD CVSS v2.0 base 10.0 — v2 rates that HIGH (v2 bands: LOW 0.0–3.9 / MEDIUM 4.0–6.9 / HIGH 7.0–10.0; v2 has no CRITICAL band). Vector AV:N/AC:L/Au:N/C:C/I:C/A:C. CVSS v2 is an older, coarser metric than v3.1/v4.0 (no Scope, no User Interaction, no Attack Requirements), so it is not directly comparable to a v3 or v4 score. NVD has never re-scored this record under v3. EPSS predicts 8.9% exploitation probability in the next 30 days, which is reflected in EG Risk but does not lift the v2 base. Confidence: LOW.
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v2.0 (legacy)
- 10.0HIGHNVD never assigned a CVSS v3 rating to this CVE
- EG Score
- 10.0(low)
- EG Risk
- 53(Track)EG Risk 53/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity100% × 45%Exploitation9% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 9%
- EPSS %ILE
- 95%
- KEV
- Not listed
Published
December 31, 2005
Last Modified
April 16, 2026
References (48)
- cve@mitreftp://patches.sgi.com/support/free/security/advisories/20060101-01-U
- cve@mitrehttp://secunia.com/advisories/18304
- cve@mitrehttp://secunia.com/advisories/18321
- cve@mitrehttp://secunia.com/advisories/18347
- cve@mitrehttp://secunia.com/advisories/18348
- cve@mitrehttp://secunia.com/advisories/18350
- cve@mitrehttp://secunia.com/advisories/18397
- cve@mitrehttp://secunia.com/advisories/18403
- cve@mitrehttp://secunia.com/advisories/18463
- cve@mitrehttp://secunia.com/advisories/18517
- cve@mitrehttp://securitytracker.com/id?1015446
- cve@mitrehttp://www.debian.de/security/2006/dsa-935
- cve@mitrehttp://www.gentoo.org/security/en/glsa/glsa-200601-05.xml
- cve@mitrehttp://www.giuseppetanzilli.it/mod_auth_pgsql2/
- cve@mitrehttp://www.idefense.com/intelligence/vulnerabilities/display.php?id=367
Patch Availability(2)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | libapache2-mod-auth-pgsql () @ warty | 2026-05-31 | ubuntu |
| redhat | mod_auth_pgsql-0:2.0.1-7.1 | 2006-01-06 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
Debian:3.1(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| libapache2-mod-auth-pgsql | 2.0.2b1-5 | 2.0.2b1-5sarge0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(2)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 1× in last 7d / 1× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-04 04:59 UTCEPSS rescore
- 2026-08-08 16:30 UTCEPSS rescore
- 2026-08-05 19:11 UTCEPSS rescore
- 2026-07-26 13:27 UTCEG score recompute▲ 10.00
- 2026-07-25 14:11 UTCEPSS rescore
- 2026-07-24 14:11 UTCEPSS rescore
- 2026-07-23 00:48 UTCEG score recompute
- 2026-07-23 00:29 UTCEG score recompute
- 2026-07-22 23:52 UTCEG score recompute
- 2026-07-22 21:33 UTCEG score recompute
- 2026-07-18 09:59 UTCEPSS rescore
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- 2026-07-15 16:53 UTCEPSS rescore
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- 2026-07-06 02:19 UTCEPSS rescore
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- 2026-07-02 14:00 UTCEPSS rescore
- 2026-07-01 15:01 UTCEPSS rescore
- 2026-06-29 14:02 UTCEPSS rescore
- 2026-06-29 14:02 UTCEPSS rescore
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- 2026-06-28 04:52 UTCEPSS rescore
- 2026-06-27 03:04 UTCEPSS rescore
- 2026-06-25 13:46 UTCEPSS rescore
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- 2026-06-21 01:56 UTCEPSS rescore
- 2026-06-19 19:22 UTCEPSS rescore
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- 2026-06-02 20:10 UTCEPSS rescore
- 2026-05-31 22:28 UTCEPSS rescore
- 2026-05-31 10:35 UTCEG score recompute
- 2026-05-31 10:35 UTCVendor advisory
- 2026-05-31 10:35 UTCGHSA enrichment
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-31 00:13 UTCEPSS rescore
- 2026-05-29 13:40 UTCEPSS rescore
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- 2026-05-22 21:15 UTCEPSS rescore
- 2026-05-21 22:38 UTCEPSS rescore
- 2026-05-20 11:20 UTCEPSS rescore
- 2026-05-20 11:20 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
- CVE-2001-0825EG 10.0HIGH
- CVE-2001-1009EG 10.0EPSS p93HIGH
- CVE-2001-0554EG 10.0EPSS p98HIGH
- CVE-2001-1162EG 10.0EPSS p96HIGH
- CVE-2001-0414EG 10.0EPSS p100HIGH
- CVE-2001-0191EG 10.0EPSS p92HIGH
- CVE-2001-0301EG 10.0EPSS p91HIGH
- CVE-2001-0197EG 10.0EPSS p96HIGH
- CVE-2001-0233EG 10.0EPSS p96HIGH
- CVE-2001-0010EG 10.0EPSS p98HIGH
Same CWE
10 shownCWE-134
- CVE-2008-7228EG 10.0HIGH
- CVE-2009-2548EG 10.0EPSS p91HIGH
- CVE-2009-1210EG 10.0EPSS p97HIGH
- CVE-2008-6520EG 10.0EPSS p91HIGH
- CVE-2008-6519EG 10.0EPSS p93HIGH
- CVE-2008-5982EG 10.0EPSS p94HIGH
- CVE-2008-3533EG 10.0EPSS p97HIGH
- CVE-2008-3116EG 10.0EPSS p92HIGH
- CVE-2008-0764EG 10.0EPSS p94HIGH
- CVE-2007-5561EG 10.0EPSS p94HIGH
Frequently asked(4)
What is CVE-2005-3656?
When was CVE-2005-3656 disclosed?
Is CVE-2005-3656 actively exploited?
How do I remediate CVE-2005-3656?
Dependency Blast Radius
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