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CVE-2023-34237

28
FAUCET Score

CVE-2023-34237 is a critical remote code execution vulnerability in SABnzbd, an open-source Usenet download tool. A design flaw in the Notification Script functionality allows an attacker to manipulate the Parameters setting, leading to code execution with the privileges of the SABnzbd process. This vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While exploitation requires access to the web interface, remote exploitation is possible if the instance is exposed to the internet without authentication. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed in the CISA KEV catalog. Patches are available in SABnzbd 4.0.2, and users unable to upgrade should implement username/password authentication for web-accessible instances.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.1.0, < 4.0.2CPE matchmatch criteria
cpe:2.3:a:sabnzbd:sabnzbd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.73%
Probability of exploitation in next 30 days
EPSS Percentile
75.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0173 is in the 63rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / sabnzbd/sabnzbd/commit/422b4fce7bfd56e95a315be0400cdfdc585df7cc
Patch
github.com / sabnzbd/sabnzbd/commit/e3a722664819d1c7c8fab97144cc299b1c18b429
Patch
github.com / sabnzbd/sabnzbd/security/advisories/GHSA-hhgh-xgh3-985r
Vendor Advisory
sabnzbd.org / wiki/configuration/4.0/general
Vendor Advisory
security.gentoo.org / glsa/202312-11