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libssh2: Fix of 2 CVEs

Type: advisorySources: OSV

- CVE-2019-3860: bounds-check SFTP packet sizes in sftp_packet_require/v and sftp_bin2attr - CVE-2019-3861: bounds-check padding_length in _libssh2_transport_read()

Products
libssh2, libssh2-devel, libssh2-docs
Affected versions
Not specified
Fixed versions
1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5
CVEs
CVE-2019-3860, CVE-2019-3861
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 11:07 UTC · Revision 1

Source evidence

libssh2: Fix of 2 CVEs

core-osv · Original source

Published 25 May 2026, 20:36 UTC

- CVE-2019-3860: bounds-check SFTP packet sizes in sftp_packet_require/v and sftp_bin2attr - CVE-2019-3861: bounds-check padding_length in _libssh2_transport_read()

osv:CLSA-2026-1779741404

libssh2

Fixed versions: 1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5

libssh2-devel

Fixed versions: 1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5

libssh2-docs

Fixed versions: 1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5

Complete source record
{
  "id": "858d0cd89b6d4017791d20159b86d03ab43f2e77c64759e6b6cd010d8e32ed89",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1779741404",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libssh2: Fix of 2 CVEs",
    "summary": "- CVE-2019-3860: bounds-check SFTP packet sizes in sftp_packet_require/v and sftp_bin2attr - CVE-2019-3861: bounds-check padding_length in _libssh2_transport_read()",
    "evidence": "osv:CLSA-2026-1779741404",
    "products": [
      {
        "name": {
          "value": "libssh2",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libssh2-devel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libssh2-docs",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1779741404",
      "aliases": [
        "CLSA-2026-1779741404"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5"
                }
              ]
            }
          ],
          "package": {
            "name": "libssh2",
            "purl": "pkg:rpm/tuxcare/libssh2?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1779741404.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5"
                }
              ]
            }
          ],
          "package": {
            "name": "libssh2-devel",
            "purl": "pkg:rpm/tuxcare/libssh2-devel?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1779741404.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.2-3.0.1.el6_10.1.tuxcare.ol.els5"
                }
              ]
            }
          ],
          "package": {
            "name": "libssh2-docs",
            "purl": "pkg:rpm/tuxcare/libssh2-docs?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1779741404.json"
          }
        }
      ],
      "modified": "2026-10-26T09:31:46.159116798Z",
      "provider": "osv",
      "upstream": [
        "CVE-2019-3860",
        "CVE-2019-3861"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/oraclelinux6els/CLSA-2026-1779741404.html"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2019-3860",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2019-3861",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 448407,
  "published_at": "2026-05-25T20:36:48+00:00"
}