Path Traversal in F Prompts.chat
CVE-2026-22661
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- F Prompts.chat — versions 0
- Fka Prompts.chat
Weakness classification (CWE)
References
- github.com/f/prompts.chat/pull/1101 (issue-tracking, Patch, Issue Tracking, Vendor Advisory)
- github.com/f/prompts.chat/commit/0f8d4c381abd7b2d7478c9fdee9522149c2d65e5 (Patch, patch)
- www.vulncheck.com/advisories/prompts-chat-path-traversal-via-skill-file-handling (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-22661?
- CVE-2026-22661 is a high-severity vulnerability in F Prompts.chat, classified under Path Traversal. CVSS score: 8.1/10. Published 2026-04-03.
- How severe is CVE-2026-22661?
- High severity. CVSS v3 base score is 8.1 out of 10.