CVE-2026-82208

wolfSSL CA-cache hit overrides callback

State
Published
Severity
7.5 High
Published
Sep 6, 2026
Updated
Sep 15, 2026
Reserved
Aug 28, 2026

Read the record on cve.org

Description

With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then incorrectly accepted.

Scores

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

Weaknesses

  • CWE-295 Improper Certificate Validation

Affected Products

ProductVersions
curlcurl
  • 8.9.1 to before 8.14.2Affected
  • 8.15.0 to before 8.16.1Affected
  • 8.17.0 to before 8.20.1Affected
  • 8.21.0 to before 8.22.0Affected
curlcurl
  • 0f2876b2c33f6784a27b6f7345bd8cd95b46352a to before ed0338befd1d865a8ea1fbaa90013a096dedd07aAffected
curlcurl
  • 8.21.0Affected
  • 8.20.0Affected
  • 8.19.0Affected
  • 8.18.0Affected
  • 8.17.0Affected
  • 8.16.0Affected
  • 8.15.0Affected
  • 8.14.1Affected
  • 8.14.0Affected
  • 8.13.0Affected
  • 8.12.1Affected
  • 8.12.0Affected
  • 8.11.1Affected
  • 8.11.0Affected
  • 8.10.1Affected
  • 8.10.0Affected
  • 8.9.1Affected

References

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