CVE-2025-14819 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00015.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

References

Link	Providers
http://www.openwall.com/lists/oss-security/2026/01/07/5
https://curl.se/docs/CVE-2025-14819.html
https://curl.se/docs/CVE-2025-14819.json

History

Thu, 08 Jan 2026 18:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 08 Jan 2026 15:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-295
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N'}`

Thu, 08 Jan 2026 11:30:00 +0000

Type	Values Removed	Values Added
References		http://www.openwall.com/lists/oss-security/2026/01/07/5

Thu, 08 Jan 2026 10:15:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		OpenSSL partial chain store policy bypass
References		https://curl.se/docs/CVE-2025-14819.html https://curl.se/docs/CVE-2025-14819.json

MITRE

Status: PUBLISHED

Assigner: curl

Published: 2026-01-08T10:07:54.408Z

Updated: 2026-01-08T15:02:04.303Z

Reserved: 2025-12-17T09:55:27.969Z

Link: CVE-2025-14819

Vulnrichment

Updated: 2026-01-08T11:06:19.910Z

NVD

Status : Awaiting Analysis

Published: 2026-01-08T10:15:46.730

Modified: 2026-01-08T18:08:18.457

Link: CVE-2025-14819

Redhat

No data.

OpenCVE Enrichment

No data.

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