Vulnerability · Published Apr 3, 2026 · Assigned by VulnCheck
CVE-2026-22661prompts.chat Path Traversal via Skill File Handling
High 8.1
In plain English
A high-severity path traversal in prompts.chat from f. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).
Official description
prompts.chat prior to commit 0f8d4c3 contains a path traversal vulnerability in skill file handling that allows attackers to write arbitrary files to the client system by crafting malicious ZIP archives with unsanitized filenames containing path traversal sequences. Attackers can exploit missing server-side filename validation to inject path traversal sequences ../ into skill file archives, which when extracted by vulnerable tools writing files outside the intended directory and overwriting shell initialization files to achieve code execution.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| f | prompts.chat | 0 – before 0f8d4c381abd7b2d7478c9fdee9522149c2d65e5 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N