CVE-2022-2237Network attack vector

Open redirect via uncollapsed leading slashes

Published Mar 27, 2023 · Updated Feb 24, 2025

Open redirect in Keycloak Node.js Adapter 18.0.1 and earlier allows remote attackers to redirect users through checkSSO requests. The checkSSO middleware formats the request URL without collapsing multiple leading slashes, allowing a scheme-relative path to become the redirect target. Exploitation requires an application using checkSSO with prompt=none and a user to follow a crafted request; the browser can then be sent to an attacker-chosen site.

CVSS severity6.1
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Open redirect in Keycloak Node.js Adapter 18.0.1 and earlier allows remote attackers to redirect users through checkSSO requests. The checkSSO middleware formats the request URL without collapsing multiple leading slashes, allowing a scheme-relative path to become the redirect target. Exploitation requires an application using checkSSO with prompt=none and a user to follow a crafted request; the browser can then be sent to an attacker-chosen site.

The record

CVE
CVE-2022-2237
Published
Mar 27, 2023
Updated
Feb 24, 2025
Vendor
Keycloak
Product
Keycloak Node.js Adapter
Classifications
CWE-601
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=unknown

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Keycloak · Keycloak Node.js Adapterversion=unknown

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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