FKIE_CVE-2026-18572

Vulnerability from fkie_nvd - Published: 2026-08-02 06:16 - Updated: 2026-09-16 19:17
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
Keycloak provides authorization services that allow administrators to restrict access to resources based on time policies (for example, only allowing access during business hours). A flaw was discovered where a user can include a fake time value in their authorization request that overrides the actual server time. This allows the user to bypass these time-based restrictions and access protected resources at unauthorized times.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:68277
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:68278
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-18572Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2509763Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat build_of_keycloak -
To clipboard 

{
  "affected": [
    {
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          "cpes": [
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          "vendor": "Red Hat",
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          ],
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          "vendor": "Red Hat",
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        },
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          "cpes": [
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      "value": "Keycloak provides authorization services that allow administrators to restrict access to resources based on time policies (for example, only allowing access during business hours). A flaw was discovered where a user can include a fake time value in their authorization request that overrides the actual server time. This allows the user to bypass these time-based restrictions and access protected resources at unauthorized times."
    }
  ],
  "id": "CVE-2026-18572",
  "lastModified": "2026-09-16T19:17:09.783",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
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          "role": "CISA Coordinator",
          "timestamp": "2026-08-03T15:51:08.005640Z",
          "version": "2.0.3"
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  "published": "2026-08-02T06:16:42.290",
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
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          "value": "CWE-863"
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}



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Sightings

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