# core-geonetwork has an Open Redirect Bypass

Advisory record · `GHSA-pjp7-q6wp-97qx`

- **Identifiers:** `GHSA-pjp7-q6wp-97qx` · `CVE-2026-53573`
- **State:** Confirmed
- **Severity:** CVSS 4.8 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-601](https://cwe.mitre.org/data/definitions/601.html)
- **Tags:** [Open redirect](https://agentprime.io/advisories/tag/open-redirect.md)
- **Published:** 31 Jul 2026
- **Updated:** 31 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 31 Jul 2026, 22:16 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.geonetwork-opensource:geonetwork` (Maven): affected `>=3.12.0, <=3.12.12 || >=4.0.0-alpha.1, <=4.0.6 || >=4.2.0, <4.2.16 || >=4.4.0, <4.4.11`; fixed in `4.2.16`, `4.4.11`

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> GeoNetwork versions 3.12.0 through 3.12.12, 4.0.0-alpha.1 through 4.0.6, 4.2.0 before 4.2.16, and 4.4.0 before 4.4.11 contain an open redirect bypass in the post-login redirect handling of their OAuth2/OIDC and Keycloak login. An attacker can craft a link to a login endpoint that sends a victim to an external site after login, which can enable phishing, with no effect on authentication or GeoNetwork data. Upgrade to 4.2.16 or 4.4.11; the 3.x and 4.0.x lines are unmaintained and will not receive a fix.

Written 2 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 4.8 Medium, CVSS 4.0: `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`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0065, the 51st percentile, on 7 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:19 UTC: First seen by agentprime
- 31 Oct 2026, 14:19 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-pjp7-q6wp-97qx)

## Sources

- [GitHub Advisory Database: GHSA-pjp7-q6wp-97qx](https://github.com/advisories/GHSA-pjp7-q6wp-97qx)
- [OSV: GHSA-pjp7-q6wp-97qx](https://osv.dev/vulnerability/GHSA-pjp7-q6wp-97qx)
- <https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-pjp7-q6wp-97qx>
- <https://github.com/geonetwork/core-geonetwork/pull/9307>
- <https://github.com/geonetwork/core-geonetwork/pull/9309>
- <https://github.com/geonetwork/core-geonetwork/commit/0d74f673dfc926bde935819ed34636d789b2fecd>
- <https://github.com/geonetwork/core-geonetwork/commit/cde9b6481a29e2473b7b74479b4e3fd6843bac4e>
- <https://github.com/geonetwork/core-geonetwork>
- <https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.16>
- <https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.11>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-pjp7-q6wp-97qx>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-pjp7-q6wp-97qx/>. Everything for agents: <https://agentprime.io/llms.txt>.
