CVE-2020-4039: Directory Traversal Vulnerability in SUSI.AI Server

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-04-30 · updated 2026-06-17
Weakness: CWE-23

Description

SUSI.AI is an intelligent Open Source personal assistant. SUSI.AI Server before version d27ed0f has a directory traversal vulnerability due to insufficient input validation. Any admin config and file readable by the app can be retrieved by the attacker. Furthermore, some files can also be moved or deleted.

Affected products

fossasia susi_server: before 2020-05-13 — fixed in 2020-05-13

How to fix

Upgrade to a fixed version: fossasia susi_server 2020-05-13. Check the vendor advisory for mitigations.

References

https://github.com/fossasia/susi_server/security/advisories/GHSA-wcm4-2jp5-q269
https://github.com/fossasia/susi_server/security/advisories/GHSA-wcm4-2jp5-q269

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