CVE catalog

CVE-2013-2503

privoxy: CVE-2013-2503

Severity: Medium
Published: Mar 11, 2013, 5:55:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 4.63% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	privoxy	sid	`4.2.0-3`	fixed
Debian	privoxy	forky	`4.2.0-3`	fixed
Debian	privoxy	trixie	`4.0.0-2`	fixed
Debian	privoxy	bookworm	`3.0.34-1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	privoxy	source	sid	`3.0.21-1`	low	Not reported	[702896]
Debian	privoxy	source	forky	`3.0.21-1`	low	Not reported	[702896]
Debian	privoxy	source	trixie	`3.0.21-1`	low	Not reported	[702896]
Debian	privoxy	source	bookworm	`3.0.21-1`	low	Not reported	[702896]

[Debian bug #702896]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[privoxy]Fixed
Details (2)
- 3.0.34-1 · amd64 · bookworm
  Fixed · Fixed: 3.0.21-1
  dsa · privoxy · debian · bookworm; dsa · privoxy · debian · 12
- 3.0.34-1 · arm64 · bookworm
  Fixed · Fixed: 3.0.21-1
  dsa · privoxy · debian · bookworm; dsa · privoxy · debian · 12

[Debian 13 (Trixie)]

[privoxy]Fixed
Details (2)
- 4.0.0-2 · amd64 · trixie
  Fixed · Fixed: 3.0.21-1
  dsa · privoxy · debian · 13
- 4.0.0-2 · arm64 · trixie
  Fixed · Fixed: 3.0.21-1
  dsa · privoxy · debian · 13

Observed: Oct 23, 2026, 5:07:59 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]