Back
CVE-2009-3826
Multiple buffer overflows in squidGuard 1.4 allow remote attackers to bypass intended URL blocking via a long URL, related to (1) the…
Medium5.0EPSS 3.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 3.8% · top 9.9% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (12)
- http://www.squidguard.org/Downloads/Patches/1.4/Readme.Patch-20091019 (opens in a new tab)x_refsource_CONFIRMx_transferred
- squidguard-url-security-bypass(53922) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- ADV-2009-3013 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 1023079 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 37107 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2010-1043 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 59164 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- DSA-2040 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- SUSE-SR:2010:014 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 36800 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 39679 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 20091026 squidGuard 1.3 & 1.4 : buffer overflow (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-3826)Record last updated .