FKIE_CVE-2026-89058

Vulnerability from fkie_nvd - Published: 2026-09-18 08:17 - Updated: 2026-09-19 14:17
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Summary
A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.
References
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2026-89058
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2519775
secalert@redhat.comhttps://github.com/resteasy/resteasy/commit/efeb2b7
secalert@redhat.comhttps://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://github.com/resteasy/resteasy",
          "defaultStatus": "unaffected",
          "packageName": "RESTEasy",
          "vendor": "Red Hat",
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              "status": "affected",
              "version": "0",
              "versionType": "maven"
            },
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              "status": "affected",
              "version": "7.0.0.Alpha1",
              "versionType": "maven"
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          "vendor": "Red Hat"
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          "product": "Red Hat build of Apicurio Registry 3",
          "vendor": "Red Hat"
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          "vendor": "Red Hat"
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          "product": "Red Hat Certificate System 11",
          "vendor": "Red Hat"
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          "cpes": [
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          "packageName": "dogtag-pki",
          "product": "Red Hat Enterprise Linux 10",
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          "packageName": "jackson-jaxrs-providers",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
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          "packageName": "resteasy-core",
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          "vendor": "Red Hat"
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          "product": "Red Hat JBoss Enterprise Application Platform 7",
          "vendor": "Red Hat"
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          "vendor": "Red Hat"
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          "vendor": "Red Hat"
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          "defaultStatus": "affected",
          "packageName": "resteasy-core",
          "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
          "vendor": "Red Hat"
        },
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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            "cpe:/a:redhat:satellite:6"
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          "packageName": "candlepin",
          "product": "Red Hat Satellite 6",
          "vendor": "Red Hat"
        },
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      ],
      "source": "secalert@redhat.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in RESTEasy\u0027s CorsFilter, which, when configured to allow all origins (\"*\"), reflects the request\u0027s Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim\u0027s session, resulting in a loss of confidentiality."
    }
  ],
  "id": "CVE-2026-89058",
  "lastModified": "2026-09-19T14:17:02.707",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.0,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-89058",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-18T11:59:37.120915Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-18T08:17:01.653",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/security/cve/CVE-2026-89058"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519775"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://github.com/resteasy/resteasy/commit/efeb2b7"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-942"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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