Is CVE-2026-14620 actively exploited?

No active exploitation of CVE-2026-14620 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-14620 be exploited remotely?

Yes. CVE-2026-14620 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-14620?

CVE-2026-14620 has a CVSS score of 4.7 (MEDIUM).

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MEDIUM

CVE-2026-14620

CWE-352Published: July 3, 2026· Updated: Jul 3, 2026

4.7

CVSS v3.1

EPSS:0.12%probability of exploitation in 30 daysPercentile:1.9th

Official Description

webpack-dev-server versions 5.2.5 and earlier expose two internal developer endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate, that perform state-changing actions on any GET request without verifying that the request originated from the dev server's own page. Any website a developer visits while the dev server is running can trigger these endpoints cross-origin with no interaction beyond the visit. An attacker can open an arbitrary existing local file in the developer's editor, including files outside the project root, and repeated requests can spawn editor processes and force recompilations that degrade the developer's machine. Patches: upgrade to webpack-dev-server 5.2.6. Workarounds: none.

NVD Source

Technical Analysis

CVE-2026-14620 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.