cvedb.io
CVE-2023-27535
MEDIUM · CVSS 5.9
EPSS exploitation probability: 0%
Published 2023-03-30T20:15:07.483 · Last modified 2026-06-17T05:45:25.500

Summary

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

Affected products

haxx — libcurl

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.