CVE-2026-92392

Full vulnerability record from the local CVENow database.
Description

During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server (with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after free of a `struct Curl_easy` object.
Severity
HIGH
CVSS score
8.1 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
2499f714-1537-4658-8207-48ae4bb9eae9
Published
2026-10-14 08:17:05.997000
Last modified
2026-10-18 23:16:57.163000
View original CVE JSON
{
  "id": "CVE-2026-92392",
  "sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9",
  "published": "2026-10-14T08:17:05.997",
  "lastModified": "2026-10-18T23:16:57.163",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "During an upload, curl mishandles HTTP/2 `RST_STREAM` received from the server\n(with reason `HTTP_1_1_REQUIRED` or `REFUSED_STREAM`) leading to a use after\nfree of a `struct Curl_easy` object."
    }
  ],
  "affected": [
    {
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9",
      "affectedData": [
        {
          "vendor": "curl",
          "product": "curl",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8.22.0",
              "lessThanOrEqual": "8.22.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.21.0",
              "lessThanOrEqual": "8.21.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.20.0",
              "lessThanOrEqual": "8.20.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.19.0",
              "lessThanOrEqual": "8.19.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.18.0",
              "lessThanOrEqual": "8.18.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.17.0",
              "lessThanOrEqual": "8.17.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.16.0",
              "lessThanOrEqual": "8.16.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.15.0",
              "lessThanOrEqual": "8.15.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.14.1",
              "lessThanOrEqual": "8.14.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.14.0",
              "lessThanOrEqual": "8.14.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.13.0",
              "lessThanOrEqual": "8.13.0",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.12.1",
              "lessThanOrEqual": "8.12.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.12.0",
              "lessThanOrEqual": "8.12.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-15T03:56:56.051034Z",
          "id": "CVE-2026-92392",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://curl.se/docs/CVE-2026-92392.html",
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9"
    },
    {
      "url": "https://curl.se/docs/CVE-2026-92392.json",
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9"
    },
    {
      "url": "https://hackerone.com/reports/4030333",
      "source": "2499f714-1537-4658-8207-48ae4bb9eae9"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/10/18/5",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/10/18/6",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://hackerone.com/reports/4030333",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}