PT-2026-65798

Insufficient Verification of Data Authenticity vulnerability in Gleam allows an adversary in the middle to substitute forged Hex package contents during dependency resolution. During dependency resolution Gleam fetches package metadata from the signature-verified Hex repository, which covers each...

CVE-2026-43965 Path Traversal in build/packages/packages.toml Allows Arbitrary Directory Deletion

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::readfromdisc are passed without validation to paths.buildpackagespackage, whi...

PT-2026-45757

Name of the Vulnerable Software and Affected Versions Gleam versions 0.18.0-rc1 through 1.17.0 Description A path traversal issue in the dependency management system allows for the recursive deletion of arbitrary directories. This occurs because package keys read from the...

CVE-2026-32146

Improper path validation vulnerability in the Gleam compiler's handling of git dependencies allows arbitrary file system modification during dependency download. Dependency names from gleam.toml and manifest.toml are incorporated into filesystem paths without sufficient validation or confinement ...