CVE-2026-59247 Insufficient verification of Hex package metadata in Gleam

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-2026-59247

CVE-2026-59247 describes an integrity issue in Gleam where dependency resolution can be hijacked by a network attacker. During resolution, Gleam fetches signed repository metadata but then queries an unsigned API for release data and writes the outer_checksum and dependency names into manifest.to...