CVE-2026-32146: Improper path validation vulnerability in the Gleam compiler's handling of git dependencies allows arbitrary f

Routine

HIGH 7.8UPGRADE

CVE-2026-32146 is a high-severity flaw (CVSS 7.8) affecting gleam. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 loc

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-04-11
Last modified	2026-09-08

Publisher (CNA): EEF · Vendor: lpil

Last updated 2026-09-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-11 14:16 UTCPublished CVE record published
2026-09-08 01:17 UTCUpdated Record last modified

lpil gleam UPGRADE

Affected: >= 1.9.0 and < 1.15.4

Fixed in: 1.15.4

Safe to downgrade to: a release before 1.9.0

1. Check installed version

apt-cache policy gleam || rpm -q gleam || gleam --version

2. UPGRADE to 1.15.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade gleam

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade gleam

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.9.0 (Debian / Ubuntu)

apt-cache madison gleam sudo apt install gleam=<VERSION_BEFORE_1.9.0> sudo apt-mark hold gleam

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list gleam sudo dnf downgrade gleam-<VERSION_BEFORE_1.9.0> sudo dnf versionlock add gleam

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-32146?

gleam: upgrade to 1.15.4. Exact commands for each OS are on this page.

Is CVE-2026-32146 being exploited?

CVE-2026-32146 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-32146 affect?

CVE-2026-32146 affects gleam. Severity is high (CVSS 7.8). 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 file

How urgent is CVE-2026-32146?

Priority 36/100. High severity; Public exploit reference

Software pages

Git vulnerabilities

References

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