Vulnerability · Published Oct 30, 2026 · Assigned by GitHub_M

CVE-2026-62965SABnzbd: Orphan-job path traversal permits arbitrary file deletion

High 7.0

In plain English

A high-severity path traversal in sabnzbd from sabnzbd. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.0High

Exploit odds (30 days)0.3%top 73.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

SABnzbd is an open source automated Usenet download tool. Prior to 5.1.0Beta3, orphan-job management in `sabnzbd/api.py` accepts the user-controlled `value` parameter without path confinement before `os.path.join()` with `download_dir`. An absolute path discards that base directory. An attacker with a valid API key can invoke `mode=status` with `name=delete_orphan` to reach `_api_delete_orphan` and `remove_all()` in `sabnzbd/filesystem.py`, which uses `shutil.rmtree()` for recursive deletion. The advisory also identifies `_api_add_orphan` and `_api_delete_all_orphan` as affected by the path-validation issue, while its concrete arbitrary-deletion trace is through `_api_delete_orphan`. The API key is stored in plaintext in `sabnzbd.ini`. The attacker can delete files or directories writable by the SABnzbd process, including configuration, queue data, and downloads, but system files outside the regular user's ownership are not affected. This issue is fixed in version 5.1.0Beta3.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	sabnzbdplus	no fix listed	DEBIAN-CVE-2026-62965
Debian:13	sabnzbdplus	no fix listed	DEBIAN-CVE-2026-62965
Debian:14	sabnzbdplus	5.1.1+dfsg-1	DEBIAN-CVE-2026-62965
Ubuntu:22.04:LTS	sabnzbdplus	no fix listed	UBUNTU-CVE-2026-62965
Ubuntu:24.04:LTS	sabnzbdplus	no fix listed	UBUNTU-CVE-2026-62965
Ubuntu:26.04:LTS	sabnzbdplus	no fix listed	UBUNTU-CVE-2026-62965

Affected products (as reported)

Vendor	Product	Versions
sabnzbd	sabnzbd	< 5.1.0Beta3

Weakness: CWE-22 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/sabnzbd/sabnzbd/security/advisories/GHSA-hxwh-mmrg-p8f5 x_refsource_CONFIRM
https://github.com/sabnzbd/sabnzbd/commit/e3e7fcf361eaebec2d76397b3d27f854f8266410 x_refsource_MISC
https://github.com/sabnzbd/sabnzbd/releases/tag/5.1.0Beta3 x_refsource_MISC