CVE-2021-43775 Arbitrary file reading vulnerability in Aim

What is CVE-2021-43775?

CVE-2021-43775 is a high-severity path traversal vulnerability in aimhubio aim, published on 23 Nov 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Aim is an open-source, self-hosted machine learning experiment tracking tool. Versions of Aim prior to 3.1.0 are vulnerable to a path traversal attack. By manipulating variables that reference files with “dot-dot-slash (../)” sequences and its variations or by using absolute file paths, it may be possible to access arbitrary files and directories stored on file system including application source code or configuration and critical system files. The vulnerability issue is resolved in Aim v3.1.0.

Weakness: CWE-22

Which versions are affected by CVE-2021-43775?

3 open source packages ship an affected version, including aim. It affects 1 product.

Products include Aimstack Aim.

How do I fix CVE-2021-43775?

Upgrade aim to 3.1.0 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-43775 being exploited?

There is no known exploitation of CVE-2021-43775 in the wild and no public exploit code.

Other vulnerabilities in aimhubio aim

• CVE-2024-6396 Arbitrary File Overwrite and Data Exfiltration in aimhubio/aim Critical 9.8
• CVE-2024-2195 Remote Code Execution in aimhubio/aim Critical 9.8
• CVE-2024-6829 Arbitrary File Overwrite through tarfile-extraction in aimhubio/aim Critical 9.1
• CVE-2024-8769 Arbitrary File Deletion via Relative Path Traversal in aimhubio/aim Critical 9.1
• CVE-2025-51464 Aim vulnerable to Cross-site Scripting High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8phj-f9w2-cjcc, PYSEC-2021-839.