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TI-2026-74697 Aliases CVE-2026-19863

Authentication bypass in Eclipse Jetty EthereumAuthenticator

Priority HIGH 81CWE-288Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-288.

Summary

The Eclipse Foundation org.eclipse.jetty:jetty-ethereum package is affected from 12.1.0 through 12.1.12. The EthereumAuthenticator identifies the login page with an unanchored substring match, so a protected request path that contains the login path as a later segment is treated as the login page, and the authenticator replaces its authentication or role requirement with ALLOWED (CWE-288). An unauthenticated remote client can reach protected resources this way. Explicitly FORBIDDEN routes are not affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00503 43rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Eclipse Foundationorg.eclipse.jetty:jetty-ethereum12.1.0 – 12.1.12—No fix listedCNA
  • org.eclipse.jetty:jetty-ethereum VendorEclipse Foundation Affected 12.1.0 – 12.1.12 Fixed in — No fix listed CNA

Remediation

No fixed version is listed for org.eclipse.jetty:jetty-ethereum.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-19863

References

Other 2

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2026-81947 Unauthenticated command injection in Eclipse Che che-machine-exec CVSS 3.1CRITICAL 9.8
  • TI-2026-13216 CWE-863: ABAC authorization bypass via trailing slash route normalization in Eclipse BaSyx Go Components CVSS 3.1CRITICAL 9.8
  • TI-2026-06514 Path traversal in Eclipse BaSyx CVSS 3.1CRITICAL 10.0
  • TI-2026-01382 In the Eclipse Theia Website repository, the GitHub Actions workflow… CVSS 3.1CRITICAL 10.0
  • TI-2023-30618 Eclipse Equinox OSGi 3.7.2 Remote Code Execution via Console CVSS 4.0CRITICAL 9.3
See all 466 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences