Eclipse Ditto Explorer UI up to 3.9.7 Link improper authorization

Summaryinfo

A vulnerability classified as critical was found in Eclipse Ditto Explorer UI up to 3.9.7. Impacted is an unknown function of the component Link Handler. Such manipulation leads to improper authorization. This vulnerability is referenced as CVE-2026-107503. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Eclipse Ditto Explorer UI up to 3.9.7 and classified as critical. Affected by this issue is an unknown function of the component Link Handler. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Unvalidated environments URL allows OAuth authorization code + PKCE verifier theft and account takeover via injected OIDC authority in Ditto Explorer in Eclipse Ditto Ditto Explorer [3.6.0,3.9.7] allows a craft link set an attacker-controlled OIDC authority with autoSso enabled. The UI then automatically starts a login at the genuine identity provider but exchanges the returned authorization code together with its PKCE code_verifier at an attacker-controlled token endpoint. This lets the attacker redeem the code for the victim's access and refresh tokens. Alternatively, an attacker-controlled api_uri causes the UI to send the victim's bearer token or Basic credentials to the attacker. Because the configuration is persisted, later visits to the UI without the crafted link repeat the token theft.

The advisory is available at gitlab.eclipse.org. This vulnerability is handled as CVE-2026-107503 since 10/08/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/08/2026). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Eclipse

Name

• Ditto Explorer UI

Version

• 3.9.0
• 3.9.1
• 3.9.2
• 3.9.3
• 3.9.4
• 3.9.5
• 3.9.6
• 3.9.7

License

• open-source

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CPE 2.2info

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