CVE-2009-3826: n/a vulnerability

CVE-2009-3826: Multiple buffer overflows in squidGuard 1.4 allow remote attackers to bypass intended URL blocking via a lo...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 06:38 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2009-3826 affects squidGuard 1.4, a web filtering component often used with Squid proxies. A remote user could use an overly long URL to bypass intended URL blocking. For organizations relying on squidGuard for web access control, the main concern is policy enforcement failure, with incomplete public detail on broader impact. Exposure is most likely where squidGuard 1.4 is deployed with Squid to enforce URL filtering or redirect blocked requests. The bundle does not identify other affected versions or products, so version validation should rely on vendor and distribution advisories. Treat this as a web-control integrity issue. It is not marked as known exploited in the supplied data, but unpatched affected proxies may fail to enforce URL restrictions, weakening compliance and acceptable-use controls. Mitigation focus: Inventory Squid proxy stacks for squidGuard 1.4 usage.; Apply vendor or distribution patches referenced by squidGuard, Debian, or SUSE guidance.; Check current vendor guidance if package provenance differs from Debian or SUSE..

Prepared: Jun 28, 2026, 18:15 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 28, 2009, 14:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
squidguard-url-security-bypass(53922)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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