CVE-2026-19863

Critical

Description

An unauthenticated client may access certain protected resources when using EthereumAuthenticator if the request path contains the configured login path. This is caused by the authenticator using an unanchored substring match when identifying the login page. If the login path appears later within a protected request path, the request may be treated as the login page and its authentication or role requirement replaced with ALLOWED. Exploitation requires the protected resource path to contain the configured login path as a later segment. Explicitly FORBIDDEN routes are not affected.

SeverityCritical
CVSS9.3
Exploit probability—
ProductEclipse Foundation Org.eclipse.jetty:jetty-ethereum
PublishedOct 15, 2026
First seenOct 15, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
Eclipse Foundation org.eclipse.jetty:jetty-ethereum12.1.0 ≤ v ≤ 12.1.12—

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