# Keycloak Services has Improper Validation of Consistency within Input

Advisory record · `GHSA-wcvj-vpvw-9rr5`

- **Identifiers:** `GHSA-wcvj-vpvw-9rr5` · `CVE-2026-9689`
- **State:** Confirmed
- **Severity:** CVSS 4.2 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-1288](https://cwe.mitre.org/data/definitions/1288.html)
- **Tags:** [CWE-1288](https://agentprime.io/advisories/tag/cwe-1288.md)
- **Published:** 27 May 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 27 May 2026, 12:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `org.keycloak:keycloak-services` (Maven): affected `>=26.5.0, <=26.6.4 || <=26.4.7`; no fixed version yet

## 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

- 4.2 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N`, from CNA (redhat)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0032, the 25th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:17 UTC: First seen by agentprime
- 31 Oct 2026, 14:17 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-wcvj-vpvw-9rr5)

## Sources

- [GitHub Advisory Database: GHSA-wcvj-vpvw-9rr5](https://github.com/advisories/GHSA-wcvj-vpvw-9rr5)
- [OSV: GHSA-wcvj-vpvw-9rr5](https://osv.dev/vulnerability/GHSA-wcvj-vpvw-9rr5)
- <https://nvd.nist.gov/vuln/detail/CVE-2026-9689>
- <https://github.com/keycloak/keycloak/issues/49430>
- <https://github.com/keycloak/keycloak/pull/49959>
- <https://github.com/keycloak/keycloak/commit/18832bcae5bebd5a1d66c2ec5fcd640e576fa625>
- <https://github.com/keycloak/keycloak/commit/1f58a4b79a258bcf2ef86b58fbf0016cdb91291f>
- <https://github.com/keycloak/keycloak/commit/267a1a33d4dc1eac7622614ba9772b4e1e35726f>
- <https://access.redhat.com/errata/RHSA-2026:50846>
- <https://access.redhat.com/errata/RHSA-2026:50847>
- <https://access.redhat.com/errata/RHSA-2026:50848>
- <https://access.redhat.com/errata/RHSA-2026:50849>
- <https://access.redhat.com/security/cve/CVE-2026-9689>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2481845>

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-wcvj-vpvw-9rr5>, 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-wcvj-vpvw-9rr5/>. Everything for agents: <https://agentprime.io/llms.txt>.