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THREAT OPSThreat News › [NVD] CVE-2026-11564 (CRITICAL 9.1) — libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same hand

[NVD] CVE-2026-11564 (CRITICAL 9.1) — libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same hand

lownvdPublished 2026-07-03

CVE-2026-11564 CVSS: 9.1 CRITICAL Published: 2026-07-03T07:16:23.790

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup.

An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same handle to custom CA material for a later transfer.

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-11564