AIKIDO-2026-631281
libcurl is vulnerable to Authentication Bypass
37
Low Risk
This Affects:
libcurlTL;DR
Connection reuse ignores some client certificate and private key settings. A later transfer can reuse a connection that was authenticated with a different client key, so the server still sees the previous client identity. The fix compares those mTLS settings before reuse.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you reuse connections while changing client certificate or private key options.
Background info
libcurl is vulnerable to Authentication Bypass in versions 7.7 - 8.20.0.
How to fix this
Upgrade the libcurl and/or the curl.curl library to the patch version.
Links
GitHub Release
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