{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "6.3.0"
              },
              {
                "introduced": "7.0.0-alpha01"
              },
              {
                "fixed": "7.0.0-alpha03"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "5df07027c6b180d9a807f5b8afda13760c7a114b"
            },
            {
              "fixed": "86cffeda358c35efdcb9867d2d378eec912a15ec"
            },
            {
              "fixed": "b9aad036a8d8671c025fb3eca79003433789f27a"
            },
            {
              "fixed": "47d5b0dba53935d5332cd41a80a353b3fc90e7b0"
            },
            {
              "fixed": "e4e56fab38a547d9625f05c97f1d8f0bcc3a5773"
            }
          ],
          "repo": "https://github.com/square/wire",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-7xpr-hc2w-34m9"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-129"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45799.json"
  },
  "details": "Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.3.0 and 7.0.0-alpha03, ByteArrayProtoReader32.skipGroup() and ProtoReader.skipGroup() in wire-runtime do not validate that a LENGTH_DELIMITED field length is non-negative before skip(), allowing a crafted protobuf varint encoding -128 as a signed Int to make skip(-128) move the internal position negative and make the next readByte() throw ArrayIndexOutOfBoundsException instead of the documented IOException or ProtocolException, which can crash services using ProtoAdapter.decode(byte[]) on untrusted payloads. This issue is fixed in versions 6.3.0 and 7.0.0-alpha03.",
  "id": "CVE-2026-45799",
  "modified": "2026-07-22T05:29:52.011802135Z",
  "published": "2026-07-17T19:49:30.331Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/square/wire/releases/tag/6.3.0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/square/wire/releases/tag/7.0.0-alpha03"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45799.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/square/wire/security/advisories/GHSA-7xpr-hc2w-34m9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45799"
    },
    {
      "type": "FIX",
      "url": "https://github.com/square/wire/commit/47d5b0dba53935d5332cd41a80a353b3fc90e7b0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/square/wire/commit/e4e56fab38a547d9625f05c97f1d8f0bcc3a5773"
    },
    {
      "type": "FIX",
      "url": "https://github.com/square/wire/pull/3595"
    },
    {
      "type": "FIX",
      "url": "https://github.com/square/wire/pull/3597"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Wire: skipGroup() missing negative-length check allows 10-byte payload to crash any Wire-decoding service"
}