What is CVE-2020-4039?

CVE-2020-4039 is a high-severity vulnerability in Fossasia Susi.ai, classified under Relative Path Traversal. CVSS score: 8.6/10. Published 2021-04-30.

How severe is CVE-2020-4039?

High severity. CVSS v3 base score is 8.6 out of 10.

Path Traversal in Fossasia Susi.ai

CVE-2020-4039

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.

Published 2021-04-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Fossasia Susi.ai
Fossasia Susi Server — versions <=d27ed0f

Weakness classification (CWE)

References

github.com/fossasia/susi_server/security/advisories/GHSA-wcm4-2jp5-q269 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-4039?: CVE-2020-4039 is a high-severity vulnerability in Fossasia Susi.ai, classified under Relative Path Traversal. CVSS score: 8.6/10. Published 2021-04-30.
How severe is CVE-2020-4039?: High severity. CVSS v3 base score is 8.6 out of 10.