CVE-2026-77322

Description

SIPGO is a library for writing SIP services in the GO language. Prior to 1.4.3, WSConnection.Read in sip/transport_ws.go creates a wsutil.Reader without setting MaxFrameSize, allowing NextFrame to accept a client-controlled header.Length before ParseMaxMessageLength is applied. An unauthenticated WS or WSS peer can send a frame header declaring an extremely large payload, causing an oversized allocation or a makeslice length panic before the payload is read and crashing or exhausting memory in the server process. This issue is fixed in version 1.4.3.

Overview

State: PUBLISHED
Assigner (CNA): GitHub_M
CVSS severity: HIGH
CVSS score: 7.5 / 10
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Effective score: 7.5 / 10 HIGH source: CNA overview
CWE(s): CWE-789
Reserved: 2026-08-20
Published: 2026-09-22 19:52 UTC
Last updated: 2026-09-22 19:52 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/77xxx/CVE-2026-77322.json
Linked Threat: CVE-2026-77322 — SIPGO: DoS via unvalidated WebSocket frame length

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-22 20:17:08 UTC
NVD last modified: 2026-09-22 20:17:08 UTC
NVD CVSS v3.1: 7.5 / 10 HIGH source: security-advisories@github.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability subscore: 3.9 / 10
Impact subscore: 3.6 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84818
Assigner: GitHub_M
Published: Sep 22, 2026, 7:52:12 PM
Updated: Sep 22, 2026, 7:52:12 PM
EUVD base score (CVSS 3.1): 7.5 / 10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EUVD-reported EPSS: 0.0000
Vendors: emiago
Products: sipgo (< 1.4.3)
Aliases: GHSA-8h6x-h86x-75wh

ENISA description: SIPGO is a library for writing SIP services in the GO language. Prior to 1.4.3, WSConnection.Read in sip/transport_ws.go creates a wsutil.Reader without setting MaxFrameSize, allowing NextFrame to accept a client-controlled header.Length before ParseMaxMessageLength is applied. An unauthenticated WS or WSS peer can send a frame header declaring an extremely large payload, causing an oversized allocation or a makeslice length panic before the payload is read and crashing or exhausting memory in the server process. This issue is fixed in version 1.4.3.

EUVD references (3)

Affected products (1)

Vendor	Product	Versions	Platforms
emiago	sipgo	`< 1.4.3` (affected)	—

Vendor references (3)

References embedded in the original CVE record by the assigning CNA.

https://github.com/emiago/sipgo/security/advisories/GHSA-8h6x-h86x-75wh x_refsource_CONFIRM
https://github.com/emiago/sipgo/commit/769e4bc958376e2363566c8f7042202b410becdc x_refsource_MISC
https://github.com/emiago/sipgo/releases/tag/v1.4.3 x_refsource_MISC

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (3)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://github.com/emiago/sipgo/commit/769e4bc958376e2363566c8f7042202b410becdc security-advisories@github.com
https://github.com/emiago/sipgo/releases/tag/v1.4.3 security-advisories@github.com
https://github.com/emiago/sipgo/security/advisories/GHSA-8h6x-h86x-75wh security-advisories@github.com

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-77322.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "sipgo",
          "vendor": "emiago",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.4.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "SIPGO is a library for writing SIP services in the GO language. Prior to 1.4.3, WSConnection.Read in sip/transport_ws.go creates a wsutil.Reader without setting MaxFrameSize, allowing NextFrame to accept a client-controlled header.Length before ParseMaxMessageLength is applied. An unauthenticated WS or WSS peer can send a frame header declaring an extremely large payload, causing an oversized allocation or a makeslice length panic before the payload is read and crashing or exhausting memory in the server process. This issue is fixed in version 1.4.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789: Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-22T19:52:12.441Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/emiago/sipgo/security/advisories/GHSA-8h6x-h86x-75wh",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/emiago/sipgo/security/advisories/GHSA-8h6x-h86x-75wh"
        },
        {
          "name": "https://github.com/emiago/sipgo/commit/769e4bc958376e2363566c8f7042202b410becdc",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/emiago/sipgo/commit/769e4bc958376e2363566c8f7042202b410becdc"
        },
        {
          "name": "https://github.com/emiago/sipgo/releases/tag/v1.4.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/emiago/sipgo/releases/tag/v1.4.3"
        }
      ],
      "source": {
        "advisory": "GHSA-8h6x-h86x-75wh",
        "discovery": "UNKNOWN"
      },
      "title": "SIPGO: DoS via unvalidated WebSocket frame length"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-77322",
    "datePublished": "2026-09-22T19:52:12.441Z",
    "dateReserved": "2026-08-20T19:24:11.617Z",
    "dateUpdated": "2026-09-22T19:52:12.441Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}