CVE-2005-0174

What it is

Squid 2.5 up to 2.5.STABLE7 allows remote attackers to poison the cache or conduct certain attacks via headers that do not follow the HTTP specification, including (1) multiple Content-Length headers, (2) carriage return (CR) characters that are not part of a CRLF pair, and (3) header names containing whitespace characters.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

50.5% chance of exploitation in the next 30 days (EPSS). Higher than most.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2005-02-07 05:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 22:10 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 50.5% in the next 30 days (EPSS).
• Severity: 5.0 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2005-02-07 05:00 UTC

Last modified

2026-06-16 22:10 UTC

Exploit probability

50.5% · EPSS, next 30 days

Record status

Modified

Affected

• Squid 2.5.6
• Squid 2.5.stable1
• Squid 2.5.stable2
• Squid 2.5.stable3
• Squid 2.5.stable4
• Squid 2.5.stable5
• Squid 2.5.stable6
• Squid 2.5.stable7

Attack profile CVSS 2.0 · 5.0

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2005-0174.md and follow it. Check whether this project is affected by CVE-2005-0174. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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