Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Path traversal vulnerability in Gleam's dependency management allows arbitrary directory deletion via malicious build/packages/packages.toml content. Package keys read from build/packages/packages.toml by LocalPackages::read_from_disc are passed without validation to paths.build_packages_package(), which constructs a filesystem path by joining the project build directory with the attacker-controlled key. The resulting path is then passed to fs::delete_directory (which calls remove_dir_all). No check is performed to ensure the path remains within the intended build/packages/ directory. Both absolute paths and relative traversal sequences (e.g. ../) are accepted as package keys, allowing deletion of arbitrary directories. An attacker who can cause a victim to run gleam deps download on a project containing a malicious build/packages/packages.toml (e.g. by committing the normally-gitignored file to a repository) can cause arbitrary directories on the victim's system to be recursively deleted. This issue affects Gleam from 0.18.0-rc1 until 1.17.0.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-06-02 | 1 | Disclosure1 |
| 2026-06-05 | 1 | General1 |
Gleam 1.17がリリースされたらしい escriptベースの単一実行可能ファイルを出力できるようになったり、色々機能が追加されてる ビックリしたのは、いつの間にかCVEが発行されるようになってることかな これで脆弱性の管理が出来るようになったから、より実運用へ近づける… https://nvd.nist.gov/vuln/detail/CVE-2026-43965
Post summary
The post announces the release of Gleam 1.17 and notes that CVE issuance is now enabled, but provides no technical or exploit details.
CVE-2026-43965 Path Traversal in Gleam Dependency Management Allows Arbitrary Directory Deletion https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-43965
Post summary
A new path traversal vulnerability (CVE‑2026‑43965) in Gleam’s dependency manager can delete arbitrary directories; the post provides only the vulnerability detail and not PoC, exploit, or patch information.