{"id":"CVE-2026-55864","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-55864","generatedAt":"2026-10-28T05:59:56.008Z","title":"An anonymous attacker could make the GeoNetwork server send requests to internal hosts that are not publicly reachable.","description":"GeoNetwork is a catalog application to manage spatially referenced resources. Prior to 4.2.17 and 4.4.12, POST /api/tools/ogc/sld accepted a caller-supplied WMS server URL and performed a server-side HTTP GET without destination validation. An anonymous attacker could make the GeoNetwork server send requests to internal hosts that are not publicly reachable. When the outbound response was XML, the endpoint could store and return the fetched body, making the request forgery non-blind and enabling internal data disclosure, authorization bypass, and network reconnaissance. This issue is fixed in versions 4.2.17 and 4.4.12.","published":"2026-09-15T16:17:17.000Z","lastModified":"2026-09-30T17:51:56.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":7.8,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-918"],"affected":[],"epss":{"score":0.00587,"percentile":0.47856,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.59%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/geonetwork/core-geonetwork/commit/17fdae28a5a51996bf5ff7f7e8236332c74eab77","source":"security-advisories@github.com"},{"url":"https://github.com/geonetwork/core-geonetwork/commit/a80d535c842e6af589d0bac37e7fe4ba01193757","source":"security-advisories@github.com"},{"url":"https://github.com/geonetwork/core-geonetwork/pull/9343","source":"security-advisories@github.com"},{"url":"https://github.com/geonetwork/core-geonetwork/pull/9344","source":"security-advisories@github.com"},{"url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.17","source":"security-advisories@github.com"},{"url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.12","source":"security-advisories@github.com"},{"url":"https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-5hx7-j24v-rffj","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-55864","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}