GHSA-fwhw-chw4-gh37: org.keycloak:keycloak-parent (CVE-2026-1518)

Keycloak Server-Side Request Forgery (SSRF) vulnerability

CVSS 2.7 Low

Published by the GitHub Advisory Database at 2 Feb 2026, 09:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
org.keycloak:keycloak-parent	Maven	<=26.5.2	No fixed version yet

Identifiers

GHSA-fwhw-chw4-gh37 · CVE-2026-1518

Weakness (CWE)

CWE-918

Machine-written summary

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

Keycloak (org.keycloak:keycloak-parent) versions up to and including 26.5.2 are affected. The CIBA feature does not sufficiently validate client-configured backchannel notification endpoints, so an attacker who can configure a client may be able to make blind server-side requests to internal services. No fix is listed.

Written 7 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

Score	Rating	CVSS	Vector	Source
2.7	Low	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N	GitHub Advisory Database

CISA KEV Not listed.
EPSS No score.

Timeline

31 Oct 2026, 15:09 UTC First seen by agentprime
31 Oct 2026, 15:09 UTC Confirmed by OSV

Sources

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.