CVE-2025-8419 (GCVE-0-2025-8419)

Vulnerability from cvelistv5 – Published: 2025-08-06 17:10 – Updated: 2026-01-08 02:59
VLAI
Title
Org.keycloak/keycloak-services: keycloak smtp inject vulnerability
Summary
A vulnerability was found in Keycloak-services. Special characters used during e-mail registration may perform SMTP Injection and unexpectedly send short unwanted e-mails. The email is limited to 64 characters (limited local part of the email), so the attack is limited to very shorts emails (subject and little data, the example is 60 chars). This flaw's only direct consequence is an unsolicited email being sent from the Keycloak server. However, this action could be a precursor for more sophisticated attacks.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2025:15336 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15337 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15338 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:15339 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-8419 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2385776 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Keycloak keycloak Affected: 0 , < 26.3.3 (semver)
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Red Hat Red Hat build of Keycloak 26.0     cpe:/a:redhat:build_keycloak:26.0
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Red Hat Red Hat build of Keycloak 26.0 Unaffected: 26.0.15-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.0::el9
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Red Hat Red Hat build of Keycloak 26.0 Unaffected: 26.0-18 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.0::el9
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Red Hat Red Hat build of Keycloak 26.0 Unaffected: 26.0-19 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.0::el9
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Red Hat Red Hat build of Keycloak 26.2     cpe:/a:redhat:build_keycloak:26.2
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Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2.8-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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Red Hat Red Hat build of Keycloak 26.2 Unaffected: 26.2-8 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.2::el9
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Date Public
2025-08-06 00:00
Show details on NVD website
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Special characters used during e-mail registration may perform SMTP Injection and unexpectedly send short unwanted e-mails. The email is limited to 64 characters (limited local part of the email), so the attack is limited to very shorts emails (subject and little data, the example is 60 chars). This flaw\u0027s only direct consequence is an unsolicited email being sent from the Keycloak server. However, this action could be a precursor for more sophisticated attacks.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-93\", \"description\": \"Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-01-08T02:59:54.153Z\"}, \"x_redhatCweChain\": \"CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-8419\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-08T02:59:54.153Z\", \"dateReserved\": \"2025-07-31T14:26:59.052Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2025-08-06T17:10:02.560Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.