CVE-2025-5025

libcurl supports pinning of the server certificate public key for HTTPS transfers. Due to an omission, this check is not performed when connecting with QUIC for HTTP/3, when the TLS backend is wolfSSL. Documentation says the option works with wolfSSL, failing to specify that it does not for QUIC...

Linux Distros Unpatched Vulnerability : CVE-2014-0138

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - The default configuration in cURL and libcurl 7.10.6 before 7.36.0 re-uses 1 SCP, 2 SFTP, 3 POP3, 4 POP3S, 5 IMAP, 6 IMAPS, 7 SMTP, 8 SMTPS, 9 LDAP, and 10 LDAP...

CURL-CVE-2022-27781 CERTINFO never-ending busy-loop

libcurl provides the CURLOPTCERTINFO option to allow applications to request details to be returned about a TLS server's certificate chain. Due to an erroneous function, a malicious server could make libcurl built with NSS get stuck in a never-ending busy-loop when trying to retrieve that...

CURL-CVE-2021-22876 Automatic referer leaks credentials

libcurl does not strip off user credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second HTTP request. libcurl automatically sets the Referer:...

CURL-CVE-2020-8285 FTP wildcard stack overflow

libcurl offers a wildcard matching functionality, which allows a callback set with CURLOPTCHUNKBGNFUNCTION to return information back to libcurl on how to handle a specific entry in a directory when libcurl iterates over a list of all available entries. When this callback returns...

CURL-CVE-2019-3823 SMTP end-of-response out-of-bounds read

libcurl contains a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to smtpendofresp is not null-terminated and contains no character ending the parsed number, and len is set to 5, then the strtol call reads beyond the allocated buffer. The read...

CURL-CVE-2018-16839 SASL password overflow via integer overflow

libcurl contains a buffer overrun in the SASL authentication code. The internal function Curlauthcreateplainmessage fails to correctly verify that the passed in lengths for name and password are not too long, then calculates a buffer size to allocate. On systems with a 32-bit sizet, the math to...