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Incorrect reuse of client certificates

Type: advisorySources: OSV

libcurl built on top of NSS (Network Security Services) incorrectly reused client certificates if a certificate from file was used for one TLS connection but no certificate set for a subsequent TLS connection. While the symptoms are similar to CVE-2016-5420 (Reusing connection with wrong client cert), this vulnerability was caused by an implementation detail of the NSS backend in libcurl, which is orthogonal to the cause of CVE-2016-5420.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2016-7141
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 09:35 UTC · Revision 1

Source evidence

Incorrect reuse of client certificates

core-osv · Original source

Published 7 Sept 2016, 08:00 UTC

libcurl built on top of NSS (Network Security Services) incorrectly reused client certificates if a certificate from file was used for one TLS connection but no certificate set for a subsequent TLS connection. While the symptoms are similar to CVE-2016-5420 (Reusing connection with wrong client cert), this vulnerability was caused by an implementation detail of the NSS backend in libcurl, which is orthogonal to the cause of CVE-2016-5420.

osv:CURL-CVE-2016-7141
Complete source record
{
  "id": "d74c3c02588d16073c5c8b0f4711b773acb4aef4464b242418a1b8b4eacaddeb",
  "url": "https://osv.dev/vulnerability/CURL-CVE-2016-7141",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Incorrect reuse of client certificates",
    "summary": "libcurl built on top of NSS (Network Security Services) incorrectly reused client certificates if a certificate from file was used for one TLS connection but no certificate set for a subsequent TLS connection. While the symptoms are similar to CVE-2016-5420 (Reusing connection with wrong client cert), this vulnerability was caused by an implementation detail of the NSS backend in libcurl, which is orthogonal to the cause of CVE-2016-5420.",
    "evidence": "osv:CURL-CVE-2016-7141",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CURL-CVE-2016-7141",
      "aliases": [
        "CURL-CVE-2016-7141",
        "CVE-2016-7141"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "7.19.6"
                },
                {
                  "fixed": "7.50.2"
                }
              ]
            }
          ],
          "versions": [
            "7.50.1",
            "7.50.0",
            "7.49.1",
            "7.49.0",
            "7.48.0",
            "7.47.1",
            "7.47.0",
            "7.46.0",
            "7.45.0",
            "7.44.0",
            "7.43.0",
            "7.42.1",
            "7.42.0",
            "7.41.0",
            "7.40.0",
            "7.39.0",
            "7.38.0",
            "7.37.1",
            "7.37.0",
            "7.36.0",
            "7.35.0",
            "7.34.0",
            "7.33.0",
            "7.32.0",
            "7.31.0",
            "7.30.0",
            "7.29.0",
            "7.28.1",
            "7.28.0",
            "7.27.0",
            "7.26.0",
            "7.25.0",
            "7.24.0",
            "7.23.1",
            "7.23.0",
            "7.22.0",
            "7.21.7",
            "7.21.6",
            "7.21.5",
            "7.21.4",
            "7.21.3",
            "7.21.2",
            "7.21.1",
            "7.21.0",
            "7.20.1",
            "7.20.0",
            "7.19.7",
            "7.19.6"
          ],
          "database_specific": {
            "source": "https://curl.se/docs/CURL-CVE-2016-7141.json"
          }
        }
      ],
      "modified": "2026-10-24T23:17:46Z",
      "provider": "osv",
      "references": [],
      "provider_metadata": {
        "CWE": {
          "id": "CWE-305",
          "desc": "Authentication Bypass by Primary Weakness"
        },
        "URL": "https://curl.se/docs/CVE-2016-7141.json",
        "www": "https://curl.se/docs/CVE-2016-7141.html",
        "affects": "both",
        "package": "curl",
        "severity": "High",
        "last_affected": "7.50.1"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2016-7141",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 444201,
  "published_at": "2016-09-07T08:00:00+00:00"
}