GHSA-6xx4-9wp6-65p7

Source

https://github.com/advisories/GHSA-6xx4-9wp6-65p7

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-6xx4-9wp6-65p7/GHSA-6xx4-9wp6-65p7.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-6xx4-9wp6-65p7

Published

2026-07-28T22:23:48Z

Modified

2026-07-28T22:30:30.937595729Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator

Summary

skilo add follows symbolic links, allowing arbitrary local file disclosure from a malicious skill source

Details

Impact

skilo add installs a skill by recursively copying the skill directory into the target skills directory. The copy routine (copy_dir_all) classified each entry with std::fs::DirEntry::file_type() — which does not follow symlinks — and then copied non-directory entries with std::fs::copy(), which does dereference symlinks.

As a result, a skill containing a symbolic link such as reference.txt -> /home/<user>/.ssh/id_rsa was copied as a regular file whose contents are the link's target. A malicious skill source — for example a git repository installed via skilo add github.com/<attacker>/<skills>, or a local path — could read arbitrary files readable by the user running skilo add (SSH keys, cloud credentials, .env files, etc.) and place their contents inside the installed skill directory, where the user or their agent may later read, share, or sync them.

This is arbitrary local file disclosure (CWE-59 / CWE-61, symlink following) triggered by installing an untrusted skills source.

Patches

Fixed in 0.11.1. copy_dir_all now rejects symbolic-link entries at any recursion depth (failing closed with a dedicated error) instead of dereferencing them.

Workarounds

Only install skills from sources you trust.
Inspect a skill source for symbolic links before running skilo add.

Affected versions

Introduced together with the skilo add command in 0.5.0 and present through 0.11.0. Releases before 0.5.0 do not include the add command.

Database specific

{
    "cwe_ids": [
        "CWE-59",
        "CWE-61"
    ],
    "github_reviewed_at": "2026-07-28T22:23:48Z",
    "nvd_published_at": null,
    "severity": "MODERATE",
    "github_reviewed": true
}

References

Affected packages

crates.io / skilo

Package

Name: skilo; View open source insights on deps.dev
Purl: pkg:cargo/skilo

Affected ranges

Type: SEMVER
Events: Introduced

0.5.0

Fixed

0.11.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-6xx4-9wp6-65p7/GHSA-6xx4-9wp6-65p7.json"