Token Handling Vulnerability in Siglet by Eclipse Foundation
CVE-2026-88819

6.3MEDIUM

Key Information:

Vendor

Eclipse Foundation

Status
Eclipse Data Plane Core
Vendor
CVE Published:
14 September 2026

What is CVE-2026-88819?

A security issue exists in Siglet where the refresh token handler fails to enforce proof of possession of the issuer DID. This weakness may allow unauthorized access to resources, as it does not verify the legitimacy of the token holder. Consequently, it raises concerns about the integrity and protection of user sessions in applications utilizing Siglet.

Affected Version(s)

Eclipse Data Plane Core a6f7d4cc0093931287c349e1e546ad2932c08e8d < 882fe22db42bc67abfd0304c4cdb141b762c35d1

Eclipse Data Plane Core 0.1.0 <= 0.1.3

References

https://gitlab.eclipse.org/security/vulnerability-reports...

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Eclipse Foundation Security Team
.