How severe is CVE-2020-4039?

CVE-2020-4039 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-4039 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4039?

CVE-2020-4039 affects Fossasia Susi.ai. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4039?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-4039 published?

CVE-2020-4039 was published on 2021-04-30 and last updated on 2026-06-17.

CVE-2020-4039

CVE-2020-4039 is a high-severity vulnerability in Fossasia Susi.ai with a CVSS 3.x base score of 8.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 8.6)
CVSS v2: 6.4
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Fossasia Susi.ai
Published: 2021-04-30
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-4039?: CVE-2020-4039 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-4039 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4039?: CVE-2020-4039 affects Fossasia Susi.ai. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4039?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-4039 published?: CVE-2020-4039 was published on 2021-04-30 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:fossasia:susi.ai:*:*:*:*:*:*:*:*

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