FKIE_CVE-2026-48779

Vulnerability from fkie_nvd - Published: 2026-06-17 13:20 - Updated: 2026-06-18 15:25
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
ws is an open source WebSocket client and server for Node.js. All versions from 1.1.0 up to (but not including) 5.2.5, from 6.0.0 up to 6.2.4, from 7.0.0 up to 7.5.11, and from 8.0.0 up to 8.21.0 are affected by a memory exhaustion DoS vulnerability. A peer can send a high volume of exceptionally small fragments and data chunks, with modest network traffic, to force the remote peer into allocating and holding structural wrappers that consume far more memory than the default documented message-size limit, leading to process termination due to OOM. This issue has been fixed in versions 5.2.5, 6.2.4, 7.5.11, and 8.21.0.
References
security-advisories@github.comhttps://github.com/websockets/ws/commit/86d3e8a5fb0246ed373860c5fbb0de88824a27f7Patch
security-advisories@github.comhttps://github.com/websockets/ws/commit/b5372ac67bb97a773727b8e9f5035a8123556d53Patch
security-advisories@github.comhttps://github.com/websockets/ws/commit/bca91adf15677e47dbe4f959653452727be28b94Patch
security-advisories@github.comhttps://github.com/websockets/ws/commit/fd36cd864fcdf62a08273a99e19a7d975401fee8Patch
security-advisories@github.comhttps://github.com/websockets/ws/security/advisories/GHSA-96hv-2xvq-fx4pMitigation, Patch, Vendor Advisory, Exploit
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/websockets/ws/security/advisories/GHSA-96hv-2xvq-fx4pMitigation, Patch, Vendor Advisory, Exploit
Impacted products
Vendor Product Version
ws_project ws *
ws_project ws *
ws_project ws *
ws_project ws *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "ws",
          "vendor": "websockets",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.1.0, \u003c 5.2.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.0.0, \u003c 6.2.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.5.11"
            },
            {
              "status": "affected",
              "version": "\u003e= 8.0.0, \u003c 8.21.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "0996A87C-D0FF-4A0D-946F-172476CE8742",
              "versionEndExcluding": "5.2.5",
              "versionStartIncluding": "1.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "DE37962C-D077-4D0E-A9C4-4E6F6C62F80F",
              "versionEndExcluding": "6.2.4",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "6220326D-EDFB-451F-AE2F-303CDA363061",
              "versionEndExcluding": "7.5.11",
              "versionStartIncluding": "7.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:ws_project:ws:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "1EE3B45F-FC9D-485E-9731-AC93F3730B40",
              "versionEndExcluding": "8.21.0",
              "versionStartIncluding": "8.0.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ws is an open source WebSocket client and server for Node.js. All versions from 1.1.0 up to (but not including) 5.2.5, from 6.0.0 up to 6.2.4, from 7.0.0 up to 7.5.11, and from 8.0.0 up to 8.21.0 are affected by a memory exhaustion DoS vulnerability. A peer can send a high volume of exceptionally small fragments and data chunks, with modest network traffic, to force the remote peer into allocating and holding structural wrappers that consume far more memory than the default documented message-size limit, leading to process termination due to OOM. This issue has been fixed in versions 5.2.5, 6.2.4, 7.5.11, and 8.21.0."
    }
  ],
  "id": "CVE-2026-48779",
  "lastModified": "2026-06-18T15:25:44.247",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-48779",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-17T18:07:28.748295Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-17T13:20:42.887",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/websockets/ws/commit/86d3e8a5fb0246ed373860c5fbb0de88824a27f7"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/websockets/ws/commit/b5372ac67bb97a773727b8e9f5035a8123556d53"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/websockets/ws/commit/bca91adf15677e47dbe4f959653452727be28b94"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/websockets/ws/commit/fd36cd864fcdf62a08273a99e19a7d975401fee8"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory",
        "Exploit"
      ],
      "url": "https://github.com/websockets/ws/security/advisories/GHSA-96hv-2xvq-fx4p"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory",
        "Exploit"
      ],
      "url": "https://github.com/websockets/ws/security/advisories/GHSA-96hv-2xvq-fx4p"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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