{"id":"GHSA-pjp7-q6wp-97qx","summary":"core-geonetwork has an Open Redirect Bypass","details":"### Summary\nGeoNetwork's post-login redirect handling can be bypassed to redirect users to an attacker-controlled external site, even though the code attempts to restrict redirect targets to relative, in-application URLs. This affects both supported SSO login methods: OAuth2/OIDC and Keycloak.\n\n### Details\nBoth the OAuth2/OIDC and Keycloak login filters validate the client-supplied post-login redirect target before forwarding the browser to it, but the validation does not correctly reject every kind of URL that causes the browser to leave the GeoNetwork origin. As a result, a value that is treated as a safe, in-application relative path by the filter can still cause the browser to be redirected to an external, attacker-controlled host.\n\n### Impact\nAn attacker can craft a link to a legitimate GeoNetwork OAuth2/OIDC or Keycloak login endpoint that, after the login flow completes, redirects the victim to an arbitrary external site. This can be used for phishing (e.g., presenting a fake login form) or to chain into other attacks hosted externally. This does not bypass authentication or expose GeoNetwork data directly; the impact is Open Redirect (CWE-601).\n\nGeoNetwork 3.x and 4.0.x are archived/unmaintained and will not receive a fix for this issue. Instances running those lines should upgrade to a supported release (4.2.16 or later, or 4.4.11 or later).","aliases":["CVE-2026-53573"],"modified":"2026-07-31T22:41:15.651598Z","published":"2026-07-31T22:16:34Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-07-31T22:16:34Z","nvd_published_at":null,"cwe_ids":["CWE-601"]},"references":[{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-pjp7-q6wp-97qx"},{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/pull/9307"},{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/pull/9309"},{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/commit/0d74f673dfc926bde935819ed34636d789b2fecd"},{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/commit/cde9b6481a29e2473b7b74479b4e3fd6843bac4e"},{"type":"PACKAGE","url":"https://github.com/geonetwork/core-geonetwork"},{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.16"},{"type":"WEB","url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.11"}],"affected":[{"package":{"name":"org.geonetwork-opensource:geonetwork","ecosystem":"Maven","purl":"pkg:maven/org.geonetwork-opensource/geonetwork"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12.0"},{"last_affected":"3.12.12"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-pjp7-q6wp-97qx/GHSA-pjp7-q6wp-97qx.json"}},{"package":{"name":"org.geonetwork-opensource:geonetwork","ecosystem":"Maven","purl":"pkg:maven/org.geonetwork-opensource/geonetwork"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha.1"},{"last_affected":"4.0.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-pjp7-q6wp-97qx/GHSA-pjp7-q6wp-97qx.json"}},{"package":{"name":"org.geonetwork-opensource:geonetwork","ecosystem":"Maven","purl":"pkg:maven/org.geonetwork-opensource/geonetwork"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.2.0"},{"fixed":"4.2.16"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 4.2.15","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-pjp7-q6wp-97qx/GHSA-pjp7-q6wp-97qx.json"}},{"package":{"name":"org.geonetwork-opensource:geonetwork","ecosystem":"Maven","purl":"pkg:maven/org.geonetwork-opensource/geonetwork"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"4.4.11"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 4.4.10","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-pjp7-q6wp-97qx/GHSA-pjp7-q6wp-97qx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N"}]}