CVE-2026-88819Network attack vectorHinoki check available

Access-token issuance via unbound refresh tokens

Published Sep 14, 2026 · Updated Sep 14, 2026

Improper authentication in Data Plane Core Siglet 0.1.0 through 0.1.3 allows remote attackers to obtain access tokens using a stolen refresh token. The refresh handler accepts the bearer refresh token without requiring proof that the requester controls the private key for the issuer DID. Possession of a refresh token is therefore sufficient to mint replacement access credentials for the token's identity.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authentication in Data Plane Core Siglet 0.1.0 through 0.1.3 allows remote attackers to obtain access tokens using a stolen refresh token. The refresh handler accepts the bearer refresh token without requiring proof that the requester controls the private key for the issuer DID. Possession of a refresh token is therefore sufficient to mint replacement access credentials for the token's identity.

The record

CVE
CVE-2026-88819
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
The Eclipse Foundation
Product
Eclipse Data Plane Core
Classifications
T1550.001
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1.0 <=0.1.3
  2. Affected versionversion=a6f7d4cc0093931287c349e1e546ad2932c08e8d <882fe22db42bc67abfd0304c4cdb141b762c35d1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Eclipse Foundation · Eclipse Data Plane Coreversion=0.1.0 <=0.1.3; version=a6f7d4cc0093931287c349e1e546ad2932c08e8d <882fe22db42bc67abfd0304c4cdb141b762c35d1

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1550.001Use Alternate Authentication Material: Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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