CVE-2021-22926
libcurl-using applications can ask for a specific client certificate to be used in a transfer.
Published Aug 5, 2021 · updated Oct 14, 2026 · haxx curl
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the option ( with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate by name or with a file name - using the same option. If the name exists as a file, it will be used instead of by name.If the appliction runs with a current working directory that is writable by other users (like ), a malicious user can create a file name with the same name as the app wants to use by name, and thereby trick the application to use the file based cert instead of the one referred to by name making libcurl send the wrong client certificate in the TLS connection handshake.
Timeline
Detection, updates, and resolution for this record.
Aug 5, 2021 · NIST NVD
Detected
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the option ( with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate by name or with a file name - using the same option. If the name exists as a file, it will be used instead of by name.If
Oct 14, 2026 · NIST NVD
Updated
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the option ( with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate by name or with a file name - using the same option. If the name exists as a file, it will be used instead of by name.If
Affected
- cpe haxx/curlversion unspecified
- cpe netapp/active iq unified managerversion unspecified
- cpe netapp/clustered data ontapversion unspecified
- cpe netapp/h300e firmwareversion unspecified
- cpe netapp/h300s firmwareversion unspecified
- cpe netapp/hci management nodeversion unspecified
- cpe netapp/oncommand insightversion unspecified
- cpe netapp/oncommand workflow automationversion unspecified
- cpe netapp/snapcenterversion unspecified
- cpe oracle/mysql serverversion unspecified
- cpe siemens/sinec infrastructure network servicesversion unspecified
Sources
- CVE.orgCVE-2021-22926
Official CVE identifier
cve.org - NIST NVDCVE-2021-22926
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the option ( with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask f
nvd.nist.gov