{"id":"CVE-2026-53573","aliases":["EUVD-2026-51668","GHSA-pjp7-q6wp-97qx"],"status":"published","title":"core-geonetwork has an Open Redirect Bypass","description":"GeoNetwork is a catalog application to manage spatially referenced resources. From 3.12.0 until 4.2.16 and 4.4.11, unsafe redirect validation in GeonetworkOAuth2LoginAuthenticationFilter and KeycloakAuthenticationProcessingFilter permits an attacker-controlled external redirect after login. This issue is fixed in versions 4.2.16 and 4.4.11.","severity":{"version":"4.0","score":4.8,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00648,"percentile":0.5134,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-601"],"published":"2026-07-31T22:16:25Z","modified":"2026-11-04T02:47:48Z","fixes":[{"ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","fixed_in":["4.2.16","4.4.11"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12.0"},{"last_affected":"3.12.12"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha.1"},{"last_affected":"4.0.6"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.2.0"},{"last_affected":"4.2.15"},{"fixed":"4.2.16"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"last_affected":"4.4.10"},{"fixed":"4.4.11"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.12.0"},{"last_affected":"3.12.12"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha.1"},{"last_affected":"4.0.6"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.2.0"},{"fixed":"4.2.16"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.geonetwork-opensource:geonetwork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.4.0"},{"fixed":"4.4.11"}]}]}],"products":[{"vendor":"geonetwork","product":"core-geonetwork"}],"references":[{"url":"https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-pjp7-q6wp-97qx","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/geonetwork/core-geonetwork/pull/9307","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/geonetwork/core-geonetwork/pull/9309","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/geonetwork/core-geonetwork/commit/0d74f673dfc926bde935819ed34636d789b2fecd","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/geonetwork/core-geonetwork/commit/cde9b6481a29e2473b7b74479b4e3fd6843bac4e","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.16","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.11","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/advisories/GHSA-pjp7-q6wp-97qx"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53573.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53573","tags":["advisory"]},{"url":"https://github.com/geonetwork/core-geonetwork","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-53573","title":"core-geonetwork has an Open Redirect Bypass","description":"GeoNetwork is a catalog application to manage spatially referenced resources. From 3.12.0 until 4.2.16 and 4.4.11, unsafe redirect validation in GeonetworkOAuth2LoginAuthenticationFilter and KeycloakAuthenticationProcessingFilter permits an attacker-controlled external redirect after login. This issue is fixed in versions 4.2.16 and 4.4.11.","status":"published","published":"2026-07-31T22:16:25.11Z","modified":"2026-08-03T16:26:56.688Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:19:59.761005Z"}],"euvd":[{"id":"EUVD-2026-51668","description":"GeoNetwork is a catalog application to manage spatially referenced resources. From 3.12.0 until 4.2.16 and 4.4.11, unsafe redirect validation in GeonetworkOAuth2LoginAuthenticationFilter and KeycloakAuthenticationProcessingFilter permits an attacker-controlled external redirect after login. This issue is fixed in versions 4.2.16 and 4.4.11.","status":"published","published":"2026-07-31T22:16:25Z","modified":"2026-08-03T16:26:56Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T18:02:24.366648Z"}],"ghsa":[{"id":"GHSA-pjp7-q6wp-97qx","title":"core-geonetwork has an Open Redirect Bypass","description":"### 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).","status":"published","published":"2026-07-31T22:16:34Z","modified":"2026-07-31T22:16:36Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium"},{"version":"3.1","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:40:55.903445Z"}],"nvd":[{"id":"CVE-2026-53573","description":"GeoNetwork is a catalog application to manage spatially referenced resources. From 3.12.0 until 4.2.16 and 4.4.11, unsafe redirect validation in GeonetworkOAuth2LoginAuthenticationFilter and KeycloakAuthenticationProcessingFilter permits an attacker-controlled external redirect after login. This issue is fixed in versions 4.2.16 and 4.4.11.","status":"published","published":"2026-07-31T23:17:24.667Z","modified":"2026-10-23T23:10:00.157Z","cvss":[{"version":"4.0","score":4.8,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T14:12:34.290716Z"}],"osv":[{"id":"CVE-2026-53573","title":"core-geonetwork has an Open Redirect Bypass","description":"GeoNetwork is a catalog application to manage spatially referenced resources. From 3.12.0 until 4.2.16 and 4.4.11, unsafe redirect validation in GeonetworkOAuth2LoginAuthenticationFilter and KeycloakAuthenticationProcessingFilter permits an attacker-controlled external redirect after login. This issue is fixed in versions 4.2.16 and 4.4.11.","status":"published","published":"2026-07-31T22:16:25.11Z","modified":"2026-11-09T07:04:12.818377851Z","cvss":[{"version":"4.0","score":4.8,"vector":"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","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-09T03:16:17.543303Z"},{"id":"GHSA-pjp7-q6wp-97qx","title":"core-geonetwork has an Open Redirect Bypass","description":"### 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).","status":"published","published":"2026-07-31T22:16:34Z","modified":"2026-07-31T22:41:46.217522Z","cvss":[{"version":"3.1","score":0,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none"},{"version":"4.0","score":4.8,"vector":"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","level":"medium"}],"cwes":["CWE-601"],"updated_at":"2026-11-02T15:46:53.244788Z"}]}}