Multiple buffer overflows in squidGuard 1.4 allow remote attackers to bypass intended URL…
Priority LOW 29CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Multiple buffer overflows in squidGuard 1.4 allow remote attackers to bypass intended URL blocking via a long URL, related to (1) the relationship between a certain buffer size in squidGuard and a certain buffer size in Squid and (2) a redirect URL that contains information about the originally requested URL.
Why it matters now
EPSS 0.03829 90th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:squidguard:squidguard:1.4:*:*:*:*:*:*:* | 1.4 | Vulnerable | Squidguard |
- cpe:2.3:a:squidguard:squidguard:1.4:*:*:*:*:*:*:* Versions 1.4 Vulnerable ·Squidguard
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2009-3826
- 2026-10-03 Alias added: GHSA-2vw7-9m84-rphf
- 2026-10-21 EPSS moved to the 90th–95th percentile
References
More Squidguard vulnerabilities
- TI-2015-07349 Cross-site scripting (XSS) vulnerability in squidGuard.cgi in squidGuard before 1.5… CVSS 3.0MEDIUM 6.1
- TI-2009-03524 Buffer overflow in sgLog.c in squidGuard 1.3 and 1.4 allows remote attackers to cause a… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2009-3826 · CVE Program
- CVE-2009-3826 · NVD
- FIRST EPSS
- GHSA-2vw7-9m84-rphf · GitHub Advisory Database · CC BY 4.0
- CVE-2009-3826 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences