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JLSEC-2026-429 Medium 5.3

When doing TLS related transfers with reused easy or multi handles and altering the ...

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JLSEC Published
Modified
Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected Packages
CURL_jll >= 8.5.0+0, < 8.20.0+0
LibCURL_jll >= 7.87.0+0, < 8.18.0+0
Aliases / Upstream
CVE-2025-14819 GHSA-vqhr-m87q-9jqh EUVD-2026-1566

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.

References