CVE catalog
CVE-2021-29488
sabnzbdplus: CVE-2021-29488
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.89% · Oct 25, 2026
SABnzbd is an open source binary newsreader. A vulnerability was discovered in SABnzbd that could trick the `filesystem.renamer()` function into writing downloaded files outside the configured Download Folder via malicious PAR2 files. A patch was released as part of SABnzbd 3.2.1RC1. As a workaround, limit downloads to NZBs without PAR2 files, deny write permissions to the SABnzbd process outside areas it must access to perform its job, or update to a fixed version.
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 | sabnzbdplus | sid | 5.1.3+dfsg-1 | fixed |
| Debian | sabnzbdplus | forky | 5.1.3+dfsg-1 | fixed |
| Debian | sabnzbdplus | trixie | 4.5.0+dfsg-1+deb13u1 | fixed |
| Debian | sabnzbdplus | trixie-security | 4.5.0+dfsg-1+deb13u2 | fixed |
| Debian | sabnzbdplus | bookworm | 3.7.1+dfsg-2 | fixed |
| Ubuntu | sabnzbdplus | 16.04 | 0.7.20-1 | vulnerable |
| Ubuntu | sabnzbdplus | 16.04 | 0.7.20+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 18.04 | 1.1.1+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 18.04 | 2.3.1+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 18.04 | 2.3.2+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 20.04 | 2.3.6+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 20.04 | 2.3.6+dfsg-1build1 | vulnerable |
| Ubuntu | sabnzbdplus | 20.04 | 2.3.6+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | sabnzbdplus | 20.04 | 3.0.0~0git20200408+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 22.04 | 3.2.1+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 22.04 | 3.4.2+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 22.04 | 3.4.2+dfsg-2 | vulnerable |
| Ubuntu | sabnzbdplus | 22.04 | 3.5.0+dfsg-1 | vulnerable |
| Ubuntu | sabnzbdplus | 22.04 | 3.5.0+dfsg-2 | vulnerable |
| Ubuntu | sabnzbdplus | 22.04 | 3.5.1+dfsg-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | sabnzbdplus | source | sid | 3.2.1+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | sabnzbdplus | source | forky | 3.2.1+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | sabnzbdplus | source | trixie | 3.2.1+dfsg-1 | not yet assigned | Not reported | Not reported |
| Debian | sabnzbdplus | source | bookworm | 3.2.1+dfsg-1 | not yet assigned | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [sabnzbdplus]Fixed
Details (2)
3.7.1+dfsg-2· all · bookwormFixed · Fixed:
3.2.1+dfsg-1dsa · sabnzbdplus · debian · bookworm; dsa · sabnzbdplus · debian · 12
3.7.1+dfsg-2· all · bookwormFixed · Fixed:
3.2.1+dfsg-1dsa · sabnzbdplus · debian · bookworm; dsa · sabnzbdplus · debian · 12
[Debian 13 (Trixie)]
- [sabnzbdplus]Fixed
Details (2)
4.5.0+dfsg-1· all · trixieFixed · Fixed:
3.2.1+dfsg-1dsa · sabnzbdplus · debian · 13
4.5.0+dfsg-1· all · trixieFixed · Fixed:
3.2.1+dfsg-1dsa · sabnzbdplus · debian · 13
Observed: