Simple Machine Forum (SMF) versions 1.0.4 and earlier have an SQL injection vulnerability that allows remote attackers to inject arbitrary SQL statements.
CVE-2005-4891
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(low)
- EPSS
- 75.3%
- KEV
- Not listed
Published
January 15, 2020
Last Modified
November 21, 2024
Advisory Details (1)
Auto-updated May 31, 2026oss-security - Re: CVE-request: SMF index.php msg parameter SQL-injection (2005)
http://www.openwall.com/lists/oss-security/2012/11/14/10Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 5× in last 7d / 28× 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.
- 2026-07-11 08:22 UTCEPSS rescore
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- 2026-05-24 16:42 UTCEPSS rescore
- 2026-05-23 03:26 UTCEG score recompute
- 2026-05-23 03:26 UTCGHSA enrichment
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-1057✓ verifiedFirst seen Jun 21, 2005
Simple Machines Forum (SMF) 1.0.4 - 'modify' SQL Injection
Open source ↗
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2005-4891?
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What is the CVSS score of CVE-2005-4891?
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Dependency Blast Radius
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