CVE-2005-0173

7.5 HIGH 32% exploit odds Fix listed Auth & access Server

What it is

squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 31.9% 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

2005-05-02 04:00 UTC PublishedDisclosed publicly on CVE.org and NVD
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: 31.9% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2005-05-02 04:00 UTC
Last modified: 2026-06-16 22:10 UTC
Exploit probability: 31.9% · EPSS, next 30 days
Record status: Modified

Affected

Squid 2.0.patch1
Squid 2.0.patch2
Squid 2.0.pre1
Squid 2.0.release
Squid 2.1.patch1
Squid 2.1.patch2
Squid 2.1.pre1
Squid 2.1.pre3

Attack profile CVSS 2.0 · 7.5

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

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-2005-0173.md and follow it. Check whether this project is affected by CVE-2005-0173. 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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Fix and advisories

References

NVD record · CVE.org record