ghsa-xgp8-3hg3-c2mh

{
  "affected": [
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-xgp8-3hg3-c2mh/GHSA-xgp8-3hg3-c2mh.json"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "rustls-webpki",
        "purl": "pkg:cargo/rustls-webpki"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.101.0"
            },
            {
              "fixed": "0.103.12"
            }
          ],
          "type": "SEMVER"
        }
      ]
    },
    {
      "database_specific": {
        "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-xgp8-3hg3-c2mh/GHSA-xgp8-3hg3-c2mh.json"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "rustls-webpki",
        "purl": "pkg:cargo/rustls-webpki"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.104.0-alpha.1"
            },
            {
              "fixed": "0.104.0-alpha.6"
            }
          ],
          "type": "SEMVER"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-93601",
    "RUSTSEC-2026-0099"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-295"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-16T21:17:12Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "Permitted subtree name constraints for DNS names were accepted for certificates asserting a wildcard name.\n\nThis was incorrect because, given a name constraint of `accept.example.com`, `*.example.com` could feasibly allow a name of `reject.example.com` which is outside the constraint.\nThis is very similar to [CVE-2025-61727](https://go.dev/issue/76442).\n\nSince name constraints are restrictions on otherwise properly-issued certificates, this bug is reachable only after signature verification and requires misissuance to exploit.",
  "id": "GHSA-xgp8-3hg3-c2mh",
  "modified": "2026-09-19T03:55:49.146112754Z",
  "published": "2026-04-16T21:17:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rustls/webpki/security/advisories/GHSA-xgp8-3hg3-c2mh"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/rustls/webpki"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0099.html"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "webpki: Name constraints were accepted for certificates asserting a wildcard name"
}