Back
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…
Medium5.0EPSS 12.2%
- 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
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 (3 Nov 2026)
Loading the EPSS history…
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)
Record last updated .