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CriticalFix available

authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service

Type: advisorySources: OSV

CVE-2026-66275 affects multiple packages. An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. See references for individual vulnerability details.

Products
wildfly, wso2am
Affected versions
Not specified
Fixed versions
39.0.1-r9, 4.7.0-r2
CVEs
CVE-2026-66275
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 09:55 UTC · Revision 1

Source evidence

authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service

core-osv · Original source

Published 19 Sept 2026, 00:40 UTC

CVE-2026-66275 affects multiple packages. An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. See references for individual vulnerability details.

osv:CLEANSTART-2026-ZS57953

wildfly

Fixed versions: 39.0.1-r9

wso2am

Fixed versions: 4.7.0-r2

Complete source record
{
  "id": "e9c71e5cd66782ce80d49616747d97014788572550f5579891d815aecdc93d0c",
  "url": "https://osv.dev/vulnerability/CLEANSTART-2026-ZS57953",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service",
    "summary": "CVE-2026-66275 affects multiple packages. An authenticated attacker could exceed the session flow control incoming window potentially leading to denial of service. See references for individual vulnerability details.",
    "evidence": "osv:CLEANSTART-2026-ZS57953",
    "products": [
      {
        "name": {
          "value": "wildfly",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "39.0.1-r9",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "wso2am",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.7.0-r2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "CLEANSTART-2026-ZS57953",
      "aliases": [
        "CLEANSTART-2026-ZS57953"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "39.0.1-r9"
                }
              ]
            }
          ],
          "package": {
            "name": "wildfly",
            "purl": "pkg:apk/cleanstart/wildfly",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZS57953.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4.7.0-r2"
                }
              ]
            }
          ],
          "package": {
            "name": "wso2am",
            "purl": "pkg:apk/cleanstart/wso2am",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZS57953.json"
          }
        }
      ],
      "modified": "2026-10-08T16:47:33.179348924Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-66275"
      ],
      "references": [
        "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-ZS57953.json",
        "https://osv.dev/vulnerability/CVE-2026-66275",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-66275"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-66275",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 103549,
  "published_at": "2026-09-19T00:40:30.665+00:00"
}