CVE-2026-7504Network attack vector

Open redirect via malformed URI user-info

Published May 19, 2026 · Updated May 19, 2026

Open redirect in Red Hat build of Keycloak allows remote attackers to redirect users to unauthorized URLs through crafted requests. Multiple @ characters prevent Java URI from extracting user-info, so Keycloak checks raw authority and falls back to wildcard comparison. Exploitation requires a client with * in Valid Redirect URIs and user interaction, and it can direct the user to arbitrary locations within the domain.

CVSS severity8.1
High
EPSS probability0.50%
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 Red Hat build of Keycloak allows remote attackers to redirect users to unauthorized URLs through crafted requests. Multiple @ characters prevent Java URI from extracting user-info, so Keycloak checks raw authority and falls back to wildcard comparison. Exploitation requires a client with * in Valid Redirect URIs and user interaction, and it can direct the user to arbitrary locations within the domain.

The record

CVE
CVE-2026-7504
Published
May 19, 2026
Updated
May 19, 2026
Vendor
389 Directory Server
Product
Red Hat build of Keycloak
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

389 Directory Server · Red Hat build of KeycloakAffected versions are unavailable in this record.

Published CVSS scores

8.1Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1204.001Malicious Link

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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