CVE-2026-11564

Native CA trust persist

State
Published
Severity
9.1 Critical
Published
Jul 3, 2026
Updated
Sep 15, 2026
Reserved
Jun 8, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.19.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NCISA-ADP

Weaknesses

  • CWE-295 Improper Certificate Validation

Affected Products

ProductVersions
curlcurl
  • 8.17.0 to before 8.20.1Affected
curlcurl
  • eefd03c572996e5de4dec4fe295ad6f103e0eefc to before d69bfad3fa3daf5e72331f6870667607828d5891Affected
curlcurl
  • 8.20.0Affected
  • 8.19.0Affected
  • 8.18.0Affected
  • 8.17.0Affected

References

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