{"cve":"CVE-2026-107503","nvd":{"published":"2026-10-08T10:17:08.457","modified":"2026-10-15T14:17:15.317","status":"Awaiting Analysis","description":"In Eclipse Ditto versions 3.6.0 to 3.8.13 and 3.9.0 to 3.9.7, the Ditto Explorer UI loads its complete environment configuration, including the Ditto API URI and the OpenID Connect (OIDC) provider settings, from an arbitrary\ncross-origin URL supplied in the environmentsURL query parameter. It adopts this configuration without user confirmation and persists it in the browser's localStorage. A crafted link can therefore set an attacker-controlled OIDC\nauthority 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\nendpoint. 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\nthe configuration is persisted, later visits to the UI without the crafted link repeat the token theft. In versions 3.9.0 to 3.9.7, the Swagger UI OIDC integration of the Helm chart and the Docker Compose deployment is affected in\nthe same way, but requires the user to start the login. The issue is fixed in 3.8.14 and 3.9.8.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N","score":7.1},"cvss_v3":null,"cwes":["CWE-15","CWE-346","CWE-522"],"references":["https://eclipse.dev/ditto/release_notes_3814.html","https://eclipse.dev/ditto/release_notes_398.html","https://github.com/eclipse-ditto/ditto/commit/71061f0b01df596fad80fb24502eb1e852ea6909","https://github.com/eclipse-ditto/ditto/commit/d4e51ba20e53c73e3b24e64d4aca57f6079d9ca1","https://github.com/eclipse-ditto/ditto/commit/ee65b8cd9b7219401dcac2c25b79adc8cee4a5ba"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-107503","score":0.00204,"percentile":0.10246,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}