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CVE-2011-1499
acl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP…
- 2.6LowCVSS base score
- 1.8%Exploitation in 30 daysEPSS · top 22% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
acl.c in Tinyproxy before 1.8.3, when an Allow configuration setting specifies a CIDR block, permits TCP connections from all IP addresses, which makes it easier for remote attackers to hide the origin of web traffic by leveraging the open HTTP proxy server.
Timeline
ID reserved
By redhat
- 39 days later
· 39 days later
Published
- 13 years later
· 13 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 | Low2.6 | AV:N/AC:H/Au:N/C:N/I:P/A:N |
- EPSS (exploitation in 30 days)
- 1.8% · top 22% 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: Low 2.6.
Affected products
n/a
- affected n/a
References
9
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=621493 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=694658 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 44274 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20110408 Re: CVE request: tinyproxy runs as an open proxy when attempting to restrict allowable IP ranges (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://banu.com/cgit/tinyproxy/diff/?id=e8426f6662dc467bd1d827100481b95d9a4a23e4 (opens in a new tab)x_refsource_CONFIRMx_transferred
- tinyproxy-aclc-sec-bypass(67256) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- https://banu.com/bugzilla/show_bug.cgi?id=90 (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-2222 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- [oss-security] 20110407 CVE request: tinyproxy runs as an open proxy when attempting to restrict allowable IP ranges (opens in a new tab)mailing-listx_refsource_MLISTx_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-2011-1500 (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-2011-1499)Record last updated .