CVE-2025-59342

Description

esm.sh has arbitrary file write via path traversal in `X-Zone-Id` header in github.com/esm-dev/esm.sh

How to fix CVE-2025-59342

To remediate CVE-2025-59342, upgrade the affected package to a fixed version below.

• Go/github.com/esm-dev/esm.sh—upgrade to 136.1 or later
• Go/github.com/esm-dev/esm.sh—no fix listed

Is CVE-2025-59342 being exploited?

Moderate — EPSS is 6.4%. Track this CVE but it's not at the top of the prioritisation list.

Affected packages (2)

• from 0, < 136.1
• from 0

CVSS scores

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-59342
• PATCHgithub.com/esm-dev/esm.sh
• WEBgithub.com/esm-dev/esm.sh/blob/main/server/router.go#L116
• WEBgithub.com/esm-dev/esm.sh/blob/main/server/router.go#L411