CVE-2012-2213
Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname…
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header. NOTE: this issue might not be reproducible, because the researcher is unable to provide a squid.conf file for a vulnerable system, and the observed behavior is consistent with a squid.conf file that was (perhaps inadvertently) designed to allow access based on a "req_header Host" acl regex that matches www.uol.com.br
Timeline
ID reserved
By mitre
- 22 days later
· 22 days later
Published
- 12 years later
· 12 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 | Medium5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
- EPSS (exploitation in 30 days)
- 12.2% · top 3.8% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (6)
- 20120419 RE: Squid URL Filtering Bypass (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20120420 Re: Squid URL Filtering Bypass (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20120418 Re: Squid URL Filtering Bypass (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20120421 Re: Squid URL Filtering Bypass (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20120416 Squid URL Filtering Bypass (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 20120419 Re: Squid URL Filtering Bypass (opens in a new tab)mailing-listx_refsource_BUGTRAQx_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)
- 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-2012-2213)Record last updated .