CVE catalog
CVE-2021-20273
privoxy: CVE-2021-20273
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.95% · Oct 25, 2026
A flaw was found in privoxy before 3.0.32. A crash can occur via a crafted CGI request if Privoxy is toggled off.
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 |
| Alpine | privoxy | 3.12 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.13 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.14 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.15 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.16 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.17 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.18 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.19 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.20 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.21 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.22 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.23 | 3.0.32-r0 | fixed |
| Alpine | privoxy | 3.24 | 3.0.32-r0 | fixed |
| Ubuntu | privoxy | pro | 3.0.21-1 | vulnerable |
| Ubuntu | privoxy | pro | 3.0.21-2 | vulnerable |
| Ubuntu | privoxy | pro | 3.0.21-7+deb8u1build0.14.04.1 | vulnerable |
| Ubuntu | privoxy | pro | 3.0.21-7+deb8u1ubuntu0.1~esm1 | fixed |
| Ubuntu | privoxy | 16.04 | 3.0.23-3 | vulnerable |
| Ubuntu | privoxy | 16.04 | 3.0.23-4 | vulnerable |
| Ubuntu | privoxy | 16.04 | 3.0.23-5 | vulnerable |
| Ubuntu | privoxy | 16.04 | 3.0.24-1 | vulnerable |
| Ubuntu | privoxy | 16.04 | 3.0.24-1ubuntu0.1 | fixed |
| Ubuntu | privoxy | 18.04 | 3.0.26-3 | vulnerable |
| Ubuntu | privoxy | 18.04 | 3.0.26-4 | vulnerable |
| Ubuntu | privoxy | 18.04 | 3.0.26-5 | vulnerable |
| Ubuntu | privoxy | 18.04 | 3.0.26-5ubuntu0.1 | fixed |
| Ubuntu | privoxy | 20.04 | 3.0.28-2 | vulnerable |
| Ubuntu | privoxy | 20.04 | 3.0.28-2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | privoxy | source | sid | 3.0.32-1 | not yet assigned | Not reported | Not reported |
| Debian | privoxy | source | forky | 3.0.32-1 | not yet assigned | Not reported | Not reported |
| Debian | privoxy | source | trixie | 3.0.32-1 | not yet assigned | Not reported | Not reported |
| Debian | privoxy | source | bookworm | 3.0.32-1 | not yet assigned | Not reported | Not reported |
| Alpine | privoxy | apk | 3.12 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.13 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.14 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.15 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.16 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.17 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.18 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.19 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.20 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.21 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.22 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.23 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Alpine | privoxy | apk | 3.24 | 3.0.32-r0 | Not reported | ALPINE-CVE-2021-20273 | Not reported |
| Ubuntu | privoxy | deb | pro | 3.0.21-7+deb8u1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2021-20273 | Not reported |
| Ubuntu | privoxy | deb | 16.04 | 3.0.24-1ubuntu0.1 | Not reported | UBUNTU-CVE-2021-20273 | Not reported |
| Ubuntu | privoxy | deb | 18.04 | 3.0.26-5ubuntu0.1 | Not reported | UBUNTU-CVE-2021-20273 | Not reported |
| Ubuntu | privoxy | deb | 20.04 | 3.0.28-2ubuntu0.1 | Not reported | UBUNTU-CVE-2021-20273 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [privoxy]Fixed
Details (2)
3.0.34-1· amd64 · bookwormFixed · Fixed:
3.0.32-1dsa · privoxy · debian · bookworm; dsa · privoxy · debian · 12
3.0.34-1· arm64 · bookwormFixed · Fixed:
3.0.32-1dsa · privoxy · debian · bookworm; dsa · privoxy · debian · 12
[Debian 13 (Trixie)]
- [privoxy]Fixed
Details (2)
4.0.0-2· amd64 · trixieFixed · Fixed:
3.0.32-1dsa · privoxy · debian · 13
4.0.0-2· arm64 · trixieFixed · Fixed:
3.0.32-1dsa · privoxy · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2021_0443-1.json]
- [https://osv.dev/vulnerability/ALPINE-CVE-2021-20273]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-20273]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-20273]
- [https://security-tracker.debian.org/tracker/CVE-2021-20273]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]