UBUNTU-CVE-2025-14819 (CVE-2025-14819)

Vulnerability from osv_ubuntu – Published: 2026-01-06 07:00 – Updated: 2026-09-23 23:20 – Source website
VLAI
Details

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPT_NO_PARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcurl find and accept a trust chain that it otherwise would not.

Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "8.5.0-2ubuntu10.7"
          },
          {
            "binary_name": "libcurl3t64-gnutls",
            "binary_version": "8.5.0-2ubuntu10.7"
          },
          {
            "binary_name": "libcurl4t64",
            "binary_version": "8.5.0-2ubuntu10.7"
          }
        ],
        "priority_reason": "This is rated as being low severity by Curl developers"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@8.5.0-2ubuntu10.7?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.5.0-2ubuntu10.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.2.1-1ubuntu3",
        "8.2.1-1ubuntu3.1",
        "8.4.0-2ubuntu1",
        "8.5.0-2ubuntu1",
        "8.5.0-2ubuntu2",
        "8.5.0-2ubuntu8",
        "8.5.0-2ubuntu9",
        "8.5.0-2ubuntu10",
        "8.5.0-2ubuntu10.1",
        "8.5.0-2ubuntu10.2",
        "8.5.0-2ubuntu10.3",
        "8.5.0-2ubuntu10.4",
        "8.5.0-2ubuntu10.5",
        "8.5.0-2ubuntu10.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "curl",
            "binary_version": "8.14.1-2ubuntu1.1"
          },
          {
            "binary_name": "libcurl3t64-gnutls",
            "binary_version": "8.14.1-2ubuntu1.1"
          },
          {
            "binary_name": "libcurl4t64",
            "binary_version": "8.14.1-2ubuntu1.1"
          }
        ],
        "priority_reason": "This is rated as being low severity by Curl developers"
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "curl",
        "purl": "pkg:deb/ubuntu/curl@8.14.1-2ubuntu1.1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.14.1-2ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.12.1-3ubuntu1",
        "8.13.0-5ubuntu1",
        "8.14.1-1ubuntu2",
        "8.14.1-1ubuntu3",
        "8.14.1-2ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "When doing TLS related transfers with reused easy or multi handles and altering the `CURLSSLOPT_NO_PARTIALCHAIN` option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user\u0027s wishes and expectations. This could make libcurl find and accept a trust chain that it otherwise would not.",
  "id": "UBUNTU-CVE-2025-14819",
  "modified": "2026-09-23T23:20:46Z",
  "published": "2026-01-06T07:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-14819"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-14819"
    },
    {
      "type": "REPORT",
      "url": "https://curl.se/docs/CVE-2025-14819.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8062-1"
    }
  ],
  "related": [
    "USN-8062-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-14819"
  ]
}



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