CVE-2011-3639
The mod_proxy module in the Apache HTTP Server 2.0.x through 2.0.64 and 2.2.x before 2.2.18, when the Revision 1179239 patch is in place, does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern matches for configuration of a reverse proxy, which allows remote attackers to send requests to intranet servers by using the HTTP/0.9 protocol with a malformed URI containing an initial @ (at sign) character. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-3368.
- EPSS
- 50% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- apache:http_server
- apache:http_server2.0a1
- apache:http_server2.0a2
- apache:http_server2.0a3
- apache:http_server2.0a4
- apache:http_server2.0a5
- apache:http_server2.0a6
- apache:http_server2.0a7
- apache:http_server2.0a8
- apache:http_server2.0a9