Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-32146

CVE-2026-32146HIGH

Gleam Gleam — Improper Path Validation in Git Dependency Handling Allows Arbitrary File System Modification

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   L   L   N   N   A   N   H   N    8.3   .0022   12.0     —

AFFECTED
  Product  Versions             Fixed
  Gleam    1.9.0-rc1 –          1.15.4
  Gleam    1.9.0-rc1 –          1.15.4
  Gleam    v1.9.0-rc1-elixir –  —

TIMELINE
  Mar 10  Reserved by EEF
  Apr 11  Published (CNA: EEF)
  Sep 8   EXPLOIT PUBLISHED — CVE-2026-32146 (Gleam). Public exploit reference added.

CWE-22 · CNA: EEF · CVSS v4.0 · 8 references · NVD status: Modified

Description

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 to the intended dependency directory, allowing attacker-controlled paths (via relative traversal such as ../ or absolute paths) to target filesystem locations outside that directory. When resolving git dependencies (e.g. via gleam deps download), the computed path is used for filesystem operations including directory deletion and creation. This vulnerability occurs during the dependency resolution and download phase, which is generally expected to be limited to fetching and preparing dependencies within a confined directory. A malicious direct or transitive git dependency can exploit this issue to delete and overwrite arbitrary directories outside the intended dependency directory, including attacker-chosen absolute paths, potentially causing data loss. In some environments, this may be further leveraged to achieve code execution, for example by overwriting git hooks or shell configuration files. This issue affects Gleam from 1.9.0-rc1 until 1.15.4.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 10, 2026	Reserved	Reserved by EEF
April 11, 2026	Published	Published (CNA: EEF)
September 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-32146 (Gleam). Public exploit reference added.

Affected

Affected products and packages — 3 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Gleam	Gleam	—	1.9.0-rc1	1.15.4
Gleam	Gleam	—	1.9.0-rc1	1.15.4
Gleam	Gleam	—	v1.9.0-rc1-elixir	—

Weaknesses

CWE-22

References (8)

https://access.redhat.com/security/cve/CVE-2026-32146
https://bugzilla.redhat.com/show_bug.cgi?id=2457578
https://cna.erlef.org/cves/CVE-2026-32146.html [Third Party Advisory]
https://github.com/gleam-lang/gleam/commit/1aa5d8e594b0aa240bb213fce6ee19c65e6d5bcf [Patch]
https://github.com/gleam-lang/gleam/commit/2dc0467f822c75de94697a912755d172928ee40a [Patch]
https://github.com/gleam-lang/gleam/security/advisories/GHSA-vq5j-55vx-wq8j [Exploit, Vendor Advisory]
https://osv.dev/vulnerability/EEF-CVE-2026-32146 [Third Party Advisory]
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32146.json

Authoritative record: CVE-2026-32146 at cve.org

Vendors: gleam

Weaknesses: CWE-22

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-32146 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.