1175 matches found
CVE-2026-11586
A flaw was found in curl. A malicious server can exploit this vulnerability by sending rapid, sequential WebSocket PING messages. Due to a lack of an upper bound on memory allocation for unacknowledged frames, curl can be forced to exhaust all available memory, leading to a denial of service...
CVE-2026-12064
A flaw was found in curl. When a user invokes curl with a schemeless URL and specifies SFTP SSH File Transfer Protocol or SCP Secure Copy Protocol as the default protocol, the tool layer fails to initialize critical SSH security options. This bypasses host verification, allowing curl to connect t...
CVE-2026-8925
A flaw was found in curl. The logic handling SASL Simple Authentication and Security Layer authentication could lead to a double-free vulnerability. This occurs because the GSASL context may be deallocated twice without clearing the pointer, potentially leading to memory corruption. An attacker...
CVE-2026-8927
A flaw was found in libcurl. When reusing a libcurl handle for sequential transfers with environment-variable proxy configuration, the library does not properly clear the proxy authentication state. This oversight can lead to the unintended disclosure of Proxy-Authorization headers to an incorrec...
CVE-2026-8926
A flaw was found in curl. When curl is configured to use a .netrc file for credentials and a URL is provided with a username but no password, curl may incorrectly retrieve and use the password for a different user from the .netrc file for the same host. This could lead to unauthorized information...
Authentication Bypass by Primary Weakness
Overview Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness in the connection pool process. An attacker can bypass intended certificate validation by reusing a handle that initially used the default native CA trust and then switching it to custom CA...
Insertion of Sensitive Information Into Sent Data
Overview Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data in the process of reusing a handle for sequential transfers with environment-variable proxy configuration. An attacker can cause sensitive authentication headers to be sent to an...
CVE-2026-8926
When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a usernamewithout a password, like https://[email protected]/, curl could wrongly get and use the password for another user set in the .netrc file for that host if such a one exists and there is no...
ALPINE-CVE-2026-11352
An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can...
CVE-2026-8926
CVE-2026-8926 affects curl when using a .netrc file for credentials while the URL contains a username (no password). The vulnerability can cause curl to fetch and use the password of another user for the same host if a matching host exists in .netrc, leading to credential disclosure. The issue is...
CVE-2026-8926
When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a usernamewithout a password, like https://[email protected]/, curl could wrongly get and use the password for another user set in the .netrc file for that host if such a one exists and there is no...
CVE-2026-8925 SASL double-free
The curl logic that works with SASL authentication could end up cleaning up the GSASL context twice without clearing the pointer in between, making it free the same pointer twice...
CVE-2026-8925
CVE-2026-8925 affects curl with SASL authentication. The issue is a double-free: the GSASL context can be cleaned up twice without clearing the pointer, potentially freeing the same pointer twice. This vulnerability is present in curl versions prior to 8.21.0 (e.g., 8.15.0), and remote exploitati...
CVE-2026-11586 WS Auto-PONG memory exhaustion
By default, curl automatically responds to WebSocket PING frames. Because curl lacks an upper bound on memory allocation for unacknowledged frames, a malicious server can exhaust all available memory by flooding curl with rapid, sequential PING messages...
EUVD-2026-41498
An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can...
CVE-2026-11352 QUIC zero-length UDP datagrams busy-loop
An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can...
curl: curl: Double-free vulnerability in SASL authentication
A flaw was found in curl. The logic handling SASL Simple Authentication and Security Layer authentication could lead to a double-free vulnerability. This occurs because the GSASL context may be deallocated twice without clearing the pointer, potentially leading to memory corruption. An attacker...
curl: curl: SSH host verification bypass when using schemeless URLs with SFTP/SCP
A flaw was found in curl. When a user invokes curl with a schemeless URL and specifies SFTP SSH File Transfer Protocol or SCP Secure Copy Protocol as the default protocol, the tool layer fails to initialize critical SSH security options. This bypasses host verification, allowing curl to connect t...
curl: libcurl: curl/libcurl: Remote denial of service via QUIC UDP receive function vulnerability
A flaw was found in curl and libcurl. A malicious HTTP/3 server can exploit an issue in the QUIC UDP receive function by continuously streaming empty UDP datagrams. This can lead to a remote denial of service DoS against a curl or libcurl client, as the helper function discards zero-length UDP...
curl: curl: Information disclosure via incorrect Digest authentication header reuse
A flaw was found in curl. When libcurl performs a transfer to an HTTP origin using Digest authentication and then reuses the same connection handle for a subsequent transfer to a different origin, it may incorrectly send the authentication header intended for the first origin to the second. This...