Is CVE-2025-59342 in the CISA KEV catalog?

No. CVE-2025-59342 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2025-59342?

CVE-2025-59342 has an EPSS score of 2.83% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-59342?

No published fix for CVE-2025-59342 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-59342

UNSCOREDEPSS 85th pctl

NVD

Description

esm.sh is a nobuild content delivery network(CDN) for modern web development. In 136 and earlier, a path-traversal flaw in the handling of the X-Zone-Id HTTP header allows an attacker to cause the application to write files outside the intended storage location. The header value is used to build a filesystem path but is not properly canonicalized or restricted to the application’s storage base directory. As a result, supplying ../ sequences in X-Zone-Id causes files to be written to arbitrary directories. Version 136.1 contains a patch.

CWE-24

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

2.83%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Other references4

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-01-14.