VULNERABILITY INTELLIGENCE
CVE-2013-2503
CVSS score5.8 MEDIUM
EPSS probability4.63%
CISA KEVNot currently listed
Published2013-03-11
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:P/A:N
Description
Privoxy before 3.0.21 does not properly handle Proxy-Authenticate and Proxy-Authorization headers in the client-server data stream, which makes it easier for remote HTTP servers to spoof the intended proxy service via a 407 (aka Proxy Authentication Required) HTTP status code.
Weakness classification
- CWE-20: Improper Input Validation