CVE-2009-0801: n/a vulnerability

CVE-2009-0801: Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote end...

Squid, when transparent interception mode is enabled, uses the HTTP Host header to determine the remote endpoint, which allows remote attackers to bypass access controls for Flash, Java, Silverlight, and probably other technologies, and possibly communicate with restricted intranet sites, via a crafted web page that causes a client to send HTTP requests with a modified Host header.

UnknownCVSS not scoredNot KEV-listedUpdatedSep 17, 2024, 03:55 UTC (UTC+00:00)

Security readout for executives and security teams

This CVE concerns Squid deployments using transparent interception mode. In that mode, Squid may rely on the HTTP Host header to choose the remote destination, allowing attacker-influenced browser requests to bypass proxy access controls and potentially reach restricted intranet resources. Exposure is most likely where Squid is deployed as a transparent intercepting proxy and enforces access controls for internal or restricted destinations. The bundle does not identify specific affected versions or distributions. Treat this as a configuration-dependent legacy proxy risk. Prioritize review if Squid transparent interception protects internal resources or segmented networks. Urgency is harder to rank because the bundle lacks CVSS, affected versions, patch status, and exploitation evidence. Mitigation focus: Identify Squid instances using transparent interception mode.; Check Squid and CERT guidance for version-specific remediation.; Disable transparent interception where it is not required..

Prepared: Jun 28, 2026, 11:23 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: Mar 4, 2009, 16:00 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

1Source 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

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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