CVE-2018-14655

medium

Description

A flaw was found in Keycloak 3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final. When using 'response_mode=form_post' it is possible to inject arbitrary Javascript-Code via the 'state'-parameter in the authentication URL. This allows an XSS-Attack upon succesfully login.

References

Advisories
More

https://access.redhat.com/errata/RHSA-2018:3595

https://access.redhat.com/errata/RHSA-2018:3593

https://access.redhat.com/errata/RHSA-2018:3592

https://github.com/advisories/GHSA-458h-wv48-fq75

https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-2302

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655

Details

Source: Mitre, NVD

Published: 2018-11-13

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 3.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 5.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.01194