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GHSA-5CV4-JP36-H3MW

Vulnerability from github – Published: 2026-05-26 13:30 – Updated: 2026-07-01 17:58
VLAI
Summary
Go Net HTML parser is vulnerable to denial of service
Details

In Go Net (golang.org/x/net) before verion 0.55.0, parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Show details on source website
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "golang.org/x/net"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.55.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25680"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-01T17:58:07Z",
    "nvd_published_at": "2026-05-22T16:16:19Z",
    "severity": "MODERATE"
  },
  "details": "In Go Net (`golang.org/x/net`) before verion 0.55.0, parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.",
  "id": "GHSA-5cv4-jp36-h3mw",
  "modified": "2026-07-01T17:58:07Z",
  "published": "2026-05-26T13:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25680"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/cl/781702"
    },
    {
      "type": "WEB",
      "url": "https://go.dev/issue/79573"
    },
    {
      "type": "WEB",
      "url": "https://go.googlesource.com/net/+/08be507abce89191d78cd49da60f4501fc910472"
    },
    {
      "type": "WEB",
      "url": "https://go.googlesource.com/net/+/refs/tags/v0.55.0"
    },
    {
      "type": "WEB",
      "url": "https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2026-5028"
    },
    {
      "type": "PACKAGE",
      "url": "cs.opensource.google/go/x/net"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Go Net HTML parser is vulnerable to denial of service"
}



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