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CVE-2005-0194
Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined…
- 10.0HighCVSS base score
- 5.1%Exploitation in 30 daysEPSS · top 7.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Squid 2.5, when processing the configuration file, parses empty Access Control Lists (ACLs), including proxy_auth ACLs without defined auth schemes, in a way that effectively removes arguments, which could allow remote attackers to bypass intended ACLs if the administrator ignores the parser warnings.
Timeline
ID reserved
By mitre
- 6 days later
· 6 days later
Published
- 20 years later
· 20 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 5.1% · top 7.6% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
8
- CLA-2005:923 (opens in a new tab)vendor-advisoryx_refsource_CONECTIVAx_transferred
- http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-empty_acls (opens in a new tab)x_refsource_CONFIRMx_transferred
- 20050221 [USN-84-1] Squid vulnerabilities (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-empty_acls.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
- FLSA-2006:152809 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- http://www.squid-cache.org/bugs/show_bug.cgi?id=1166 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-667 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- VU#260421 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_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)
- EUVD EUVD-2005-0195 (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://cveledger.app/cve/CVE-2005-0194)Record last updated .