{"id":"CVE-2026-107597","title":"jwks_uri from the OIDC discovery document is fetched without checking its origin or scheme","summary":"PIA's token verification (`verify_token` in `pia/oidc.py`) fetches the OIDC discovery document of an allowlisted issuer and then follows the `jwks_uri` contained in that response without parsing it as a URL, comparing it against the appr…","severity":"medium","cvss":5.1,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","cvssSource":"cna","cwe":["CWE-918"],"vendor":"Eclipse Foundation","product":"Eclipse CSI - PIA","affected":["eclipse_csi_-_pia <= 0.8.0"],"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T10:06:37.127Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107597","references":[{"url":"https://github.com/eclipse-csi/pia/security/advisories/GHSA-97mq-mw55-36px"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/397"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T12:05:07.343Z","slug":"CVE-2026-107597","body":"## Overview\n\nPIA's token verification (`verify_token` in `pia/oidc.py`) fetches the OIDC discovery document of an allowlisted issuer and then follows the `jwks_uri` contained in that response without parsing it as a URL, comparing it against the approved issuer's origin, or requiring HTTPS — the only check is that the field is non-empty (`pia/oidc.py:42-52`). An approved identity provider — and every registered per-project Jenkins instance under `https://ci.eclipse.org/<project>/oidc` is a separate such party (`pia/models.py`) — can therefore direct PIA to issue a GET request to an arbitrary host and port, including over plaintext `http`, from PIA's own network position. The fetch happens before any signature is verified, as a side effect of an unauthenticated `POST /v1/upload/sbom` request that is ultimately rejected with 401.\n\n## Affected\n\n- `eclipse_csi_-_pia <= 0.8.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":28.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}