Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-m4j5-5x4r-2xp9
Advisory ID github_osv/GHSA-m4j5-5x4r-2xp9
Aliases CVE-2025-8419
Summary Keycloak SMTP Inject Vulnerability 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.
Status Published
Exploitability 0.5
Weighted Severity 4.8
Risk 2.4
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
System Score Found at
cvssv3.1 5.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-m4j5-5x4r-2xp9/GHSA-m4j5-5x4r-2xp9.json
generic_textual MODERATE
Reference id Reference type URL
https://bugzilla.redhat.com/show_bug.cgi?id=2385776
https://github.com/keycloak/keycloak
CVE-2025-8419 https://access.redhat.com/security/cve/CVE-2025-8419
CVE-2025-8419 https://nvd.nist.gov/vuln/detail/CVE-2025-8419
GHSA-m4j5-5x4r-2xp9 https://github.com/keycloak/keycloak/security/advisories/GHSA-m4j5-5x4r-2xp9
RHSA-2025:15336 https://access.redhat.com/errata/RHSA-2025:15336
RHSA-2025:15337 https://access.redhat.com/errata/RHSA-2025:15337
RHSA-2025:15338 https://access.redhat.com/errata/RHSA-2025:15338
RHSA-2025:15339 https://access.redhat.com/errata/RHSA-2025:15339
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/09/GHSA-m4j5-5x4r-2xp9/GHSA-m4j5-5x4r-2xp9.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-08-06T17:23:42Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/8xxx/CVE-2025-8419.json

Source Advisory: vulnrichment/CVE-2025-8419

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]

Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2025-08-06T17:23:42Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2025/8xxx/CVE-2025-8419.json

Source Advisory: vulnrichment/CVE-2025-8419

View SSVC decision tree 
[{'Exploitation': 'none'},
 {'Automatable': 'yes'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]