CVE-2026-14620: medium-severity vulnerability in webpack-dev-server
webpack-dev-server vulnerable to cross-site request forgery via internal developer endpoints
Published · Updated
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 4.7epss 0.5%
from disclosure to weapon45 days
Published on NVDJul 3
1st PoC+45d
exploitation probability
0.5%top 57% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L
Affected products
webpack-dev-server · webpack-dev-serverpublic PoCs found — 1
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