Quick answers
- Is CVE-2026-62663 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-62663 being exploited in the wild.
- How severe is CVE-2026-62663?
- High severity, with a CVSS score of 7.5, published 30 July 2026.
- Which products and versions are affected?
- Masci Banks < 2.4.4.
- Is there a fix for CVE-2026-62663?
- A patch was published on 2026-07-30: Fix released in version 2.4.4 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-62663 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-62663?
- Check whether you run Masci Banks at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A path traversal vulnerability exists in the media filters (image, audio, video, and document) of the banks library. The root cause is located in the `from_path` methods within `types.py`, where user-supplied strings are converted to `Path` objects and passed directly to `open(file_path, "rb")` without sanitization or directory restriction. An attacker who can control template variables can use `../` sequences to escape intended directories and read any file accessible to the Python process. The contents of the accessed files are base64-encoded and embedded in the rendered prompt output, facilitating easy exfiltration. This issue is fixed in version 2.4.4.
Affected products
- masci banks < 2.4.4
Timeline
- 2026-07-07: advisory: GitHub Security Advisory published
- 2026-07-30: disclosed: CVE published to NVD
- 2026-07-30: patched: Fix released in version 2.4.4