CVE-2026-19863
Received
Received - Intake
EthereumAuthenticator Path Traversal via Unanchored Login Path Match
Vulnerability report for CVE-2026-19863, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-15
Last updated on: 2026-10-15
Assigner: Eclipse Foundation
Description
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.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| org.eclipse.jetty | jetty-ethereum | From 12.1.0 (inc) to 12.1.12 (inc) |
| org.eclipse.jetty | jetty-security | From 12.1.0 (inc) to 12.1.12 (inc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-863 | The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. |
| CWE-288 | The product requires authentication, but the product has an alternate path or channel that does not require authentication. |
