CVE WatchNov 14, 2026

CVE-2026-19907

The Shipo plugin for WordPress is vulnerable to Authentication Bypass in versions 1.6 through 1.8.0. This is due to the `authenticate_rest_u

CVSS

9.8

Critical

EPSS

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KEV

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Exploit Today

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0-100

Published: Nov 14, 2026 · Last modified: Nov 14, 2026 · CWE-287

EPSS · 30d

Not enough EPSS history yet.

Technical description

The Shipo plugin for WordPress is vulnerable to Authentication Bypass in versions 1.6 through 1.8.0. This is due to the `authenticate_rest_user()` function parsing the `LOGGED_IN_COOKIE` value and authenticating the named user without verifying the cookie's cryptographic signature. The function's intended `/wp-json/shipo/` route restriction can also be bypassed by placing that substring in the query string of an unrelated REST endpoint. This makes it possible for unauthenticated attackers who know an existing username to impersonate that user, including an administrator, and perform authorized actions through the REST API, including creating another administrator account.

Official references

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