CVE-2026-8932 is a libcurl connection reuse flaw in mutual TLS (mTLS) handling. libcurl maintains a connection pool and reuses previously established connections when a new transfer's configuration is considered a match. In affected versions, the connection matching logic omitted some mTLS-related settings tied to client authentication, particularly options related to the client private key. As a result, libcurl could incorrectly treat a previously authenticated connection as reusable even after an application changed the client certificate or private key configuration. This could cause a subsequent request to be sent over a connection authenticated with the prior client identity instead of forcing a new connection with the updated credentials. The issue affects libcurl-based applications, not the curl command-line tool. Affected versions are 7.7 through 8.20.0 inclusive; fixed in 8.21.0.
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A libcurl vulnerability involving improper reuse of mTLS connections, where connection-pool matching failed to account for all client certificate and private key parameters, potentially causing requests to be sent over a connection authenticated as a previous client.
An authentication bypass vulnerability in libcurl where an existing connection may be reused after client certificate or private key settings change.
CVE-2026-8932 is only mentioned as a tag/reference in the article metadata and no vulnerability details are provided in the content.
An authentication bypass vulnerability in libcurl's mTLS connection reuse logic where an existing connection could be reused even after client certificate or private key settings changed. The issue reportedly dates back to curl 7.7 in March 2001.
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Cross-references every affected SKU, including bundled OEM variants.
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