# CVE-2026-88819

## Summary

- **CVE ID:** CVE-2026-88819
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N)
- **CWE:** CWE-290, CWE-345
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## Description

In Siglet current and past versions the refresh token handler do not enforce proof of possession of the issuer DID.

## Affected Products

- Eclipse Foundation — Eclipse Data Plane Core (a6f7d4cc0093931287c349e1e546ad2932c08e8d)
- Eclipse Foundation — Eclipse Data Plane Core (0.1.0)

## References

- [CNA](https://gitlab.eclipse.org/security/vulnerability-reports/-/work_items/931)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._