info leak uploading over WebSockets with GnuTLS

{
  "id": "d5c6090b8b02e66e68afa6866091ee387f494864c84cca4d067ca256a352cf45",
  "url": "https://osv.dev/vulnerability/CURL-CVE-2026-107928",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "info leak uploading over WebSockets with GnuTLS",
    "summary": "When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when `gnutls_record_send()` returns a number of bytes sent **greater than the number of bytes it was given to send**. GnuTLS does that after a blocked send.",
    "evidence": "osv:CURL-CVE-2026-107928",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CURL-CVE-2026-107928",
      "aliases": [
        "CURL-CVE-2026-107928",
        "CVE-2026-107928"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "7.86.0"
                },
                {
                  "fixed": "8.14.3"
                },
                {
                  "introduced": "8.15.0"
                },
                {
                  "fixed": "8.16.2"
                },
                {
                  "introduced": "8.17.0"
                },
                {
                  "fixed": "8.20.2"
                },
                {
                  "introduced": "8.21.0"
                },
                {
                  "fixed": "8.23.0"
                }
              ]
            },
            {
              "repo": "https://github.com/curl/curl.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "664249d095275ec532f55dd1752d80c8c1093a77"
                },
                {
                  "fixed": "64fb3e7a7b116f690966054f281624152d4a7651"
                }
              ]
            }
          ],
          "versions": [
            "8.22.0",
            "8.21.0",
            "8.20.0",
            "8.19.0",
            "8.18.0",
            "8.17.0",
            "8.16.0",
            "8.15.0",
            "8.14.1",
            "8.14.0",
            "8.13.0",
            "8.12.1",
            "8.12.0",
            "8.11.1",
            "8.11.0",
            "8.10.1",
            "8.10.0",
            "8.9.1",
            "8.9.0",
            "8.8.0",
            "8.7.1",
            "8.7.0",
            "8.6.0",
            "8.5.0",
            "8.4.0",
            "8.3.0",
            "8.2.1",
            "8.2.0",
            "8.1.2",
            "8.1.1",
            "8.1.0",
            "8.0.1",
            "8.0.0",
            "7.88.1",
            "7.88.0",
            "7.87.0",
            "7.86.0",
            "rc-8_23_0-3",
            "rc-8_23_0-2",
            "rc-8_23_0-1",
            "curl-8_22_0",
            "rc-8_22_0-3",
            "rc-8_22_0-2",
            "rc-8_22_0-1",
            "curl-8_21_0",
            "rc-8_21_0-3",
            "rc-8_21_0-2",
            "rc-8_21_0-1",
            "curl-8_20_0",
            "rc-8_20_0-3",
            "rc-8_20_0-2",
            "rc-8_20_0-1",
            "curl-8_19_0",
            "rc-8_19_0-3",
            "rc-8_19_0-2",
            "rc-8_19_0-1",
            "curl-8_18_0",
            "rc-8_18_0-3",
            "rc-8_18_0-2",
            "rc-8_18_0-1",
            "curl-8_17_0",
            "curl-8_16_0",
            "curl-8_15_0",
            "curl-8_14_1",
            "curl-8_14_0",
            "curl-8_13_0",
            "curl-8_12_1",
            "curl-8_12_0",
            "curl-8_11_1",
            "curl-8_11_0",
            "curl-8_10_1",
            "curl-8_10_0",
            "curl-8_9_1",
            "curl-8_9_0",
            "curl-8_8_0",
            "curl-8_7_1",
            "curl-8_7_0",
            "curl-8_6_0",
            "curl-8_5_0",
            "tiny-curl-8_4_0",
            "curl-8_4_0",
            "curl-8_3_0",
            "curl-8_2_1",
            "curl-8_2_0",
            "curl-8_1_2",
            "curl-8_1_1",
            "curl-8_1_0",
            "curl-8_0_1",
            "curl-8_0_0",
            "curl-7_88_1",
            "curl-7_88_0",
            "curl-7_87_0",
            "curl-7_86_0"
          ],
          "database_specific": {
            "source": "https://curl.se/docs/CURL-CVE-2026-107928.json",
            "vanir_signatures": [
              {
                "id": "CURL-CVE-2026-107928-29f91023",
                "digest": {
                  "length": 877,
                  "function_hash": "17004293909367189618465785831238528729"
                },
                "source": "https://github.com/curl/curl.git/commit/64fb3e7a7b116f690966054f281624152d4a7651",
                "target": {
                  "file": "lib/vtls/gtls.c",
                  "function": "gtls_send"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CURL-CVE-2026-107928-7be05e8d",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "237152868269477282733457753401809078536",
                    "310007984379778202135485959311979072715",
                    "331851364076556933562923024774740634706",
                    "25065144459799342202251174170785250709",
                    "159052280036624249758923391343624644361",
                    "292029669852123213529518847703179921945"
                  ]
                },
                "source": "https://github.com/curl/curl.git/commit/64fb3e7a7b116f690966054f281624152d4a7651",
                "target": {
                  "file": "lib/vtls/gtls.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-25T01:05:09Z"
          }
        }
      ],
      "modified": "2026-10-25T01:05:09.809818175Z",
      "provider": "osv",
      "references": [],
      "provider_metadata": {
        "CWE": {
          "id": "CWE-126",
          "desc": "Buffer Over-read"
        },
        "URL": "https://curl.se/docs/CVE-2026-107928.json",
        "www": "https://curl.se/docs/CVE-2026-107928.html",
        "issue": "https://hackerone.com/reports/4099194",
        "affects": "both",
        "package": "curl",
        "severity": "Low",
        "last_affected": "8.22.0"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-107928",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 444342,
  "published_at": "2026-10-14T08:00:00+00:00"
}