CVE-2024-1249

highpriority · track · 0EPSS 0.004 · 39 %ileDEEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.45% (39th) EPSS
CVSS 7.4 · high
Is it mine?
14 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cert_bund · osv

EPSS · scored 2026-10-27

A flaw was found in Keycloak's OIDC component in the "checkLoginIframe," which allows unvalidated cross-origin messages. This flaw allows attackers to coordinate and send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.

01

cvss

Technical severity, 0–10. One row per scoring source.

7.4
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.4

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:Hsecondary · ENISA EU
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:Hsecondary · secalert@redhat.com USexploitability 2.8 · impact 4
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:Hsecondary · OSV
v3.16.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-346USCWE-346USCWE-346US
04

affected products (14)

Products and version ranges known to be affected.

05

advisories (3)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2024-0910Red Hat Single Sign On: Mehrere Schwachstellen ermöglichen Umgehen von SicherheitsvorkehrungenDeutsch2024-04-16csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Single Sign On ausnutzen, um Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand auszulösen, DDoS-Angriffe durchzuführen, vertrauliche Informationen offenzulegen oder Dateien zu manipulieren.

  • WID-SEC-W-2024-0914Red Hat Enterprise Linux (keycloak): Mehrere SchwachstellenDeutsch2024-04-16csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Cross-Site Scripting (XSS)-Angriffe durchzuführen oder einen Denial-of-Service-Zustand zu verursachen.

  • GHSA-m6q9-p373-g5q8Keycloak's unvalidated cross-origin messages in checkLoginIframe leads to DDoS2024-04-17ghsa · osvUS

    A potential security flaw in the "checkLoginIframe" which allows unvalidated cross-origin messages, enabling potential DDoS attacks. By exploiting this vulnerability, attackers could coordinate to send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages. #### Acknowledgements Special thanks to Adriano Márcio Monteiro from BRZTEC for reporting this issue and helping us improve our project.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcert_bundosvNVDCVE.orgMITRE
published 2024-04-17modified 2026-10-27
08

references (34)

External citations — patches, advisories, analysis.

scry

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