CVE-2026-53573
Fix: geonetwork/core-geonetwork@0d74f67CVE-2026-53573 is a Open Redirect vulnerability in org.geonetwork-opensource:geonetwork. O3 Security confirms whether CVE-2026-53573 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
core-geonetwork has an Open Redirect Bypass
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-53573.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Real-World Exposure
org.geonetwork-opensource:geonetwork☕org.geonetwork-opensource:geonetwork☕org.geonetwork-opensource:geonetwork☕org.geonetwork-opensource:geonetworkReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.geonetwork-opensource:geonetwork | ≥ 3.12.0 | No fix |
| ☕Maven | org.geonetwork-opensource:geonetwork | ≥ 4.0.0-alpha.1 | No fix |
| ☕Maven | org.geonetwork-opensource:geonetwork | ≥ 4.2.0&&< 4.2.16 | 4.2.16 |
| ☕Maven | org.geonetwork-opensource:geonetwork | ≥ 4.4.0&&< 4.4.11 | 4.4.11 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.geonetwork-opensource:geonetwork. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
No patched version of org.geonetwork-opensource:geonetwork has shipped for CVE-2026-53573 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2026-53573 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2026-53573. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2026-53573 in your dependencies?
O3 detects CVE-2026-53573 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.