CVE-2020-4039: SUSI.AI is an intelligent Open Source personal assistant

Q: How do I fix CVE-2020-4039?

susi.ai: upgrade to 2020-05-13. Exact commands for each OS are on this page.

Q: Is CVE-2020-4039 being exploited?

CVE-2020-4039 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-4039 affect?

CVE-2020-4039 affects susi.ai. Severity is high (CVSS 8.6). 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

Q: How urgent is CVE-2020-4039?

Priority 53/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 8.6REMOTEUPGRADE

CVE-2020-4039 is a high-severity flaw (CVSS 8.6) affecting susi.ai. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Weakness	CWE-23, CWE-22
Published	2021-04-30
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: fossasia

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-04-30 16:15 UTCPublished CVE record published
2026-06-17 03:19 UTCUpdated Record last modified

fossasia susi.ai UPGRADE

Affected: < 2020-05-13

Fixed in: 2020-05-13

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy susi.ai || rpm -q susi.ai || susi.ai --version

2. UPGRADE to 2020-05-13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade susi.ai

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade susi.ai

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-4039?

susi.ai: upgrade to 2020-05-13. Exact commands for each OS are on this page.

Is CVE-2020-4039 being exploited?

CVE-2020-4039 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-4039 affect?

CVE-2020-4039 affects susi.ai. Severity is high (CVSS 8.6). 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

How urgent is CVE-2020-4039?

Priority 53/100. High severity; Remotely exploitable, no login, no user action

References

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