Php-mod/curl Library <2.3.2 - Cross-Site Scripting

Php-mod/curl library before 2.3.2 contains a cross-site scripting vulnerability via the postfilepathupload.php key parameter and the POST data to postmultidimensional.php. An attacker can inject arbitrary script, which can allow theft of cookie-based authentication credentials and launch of other...

RealTek Jungle SDK - Arbitrary Command Injection

There is a command injection vulnerability on the "formWsc" page of the management interface. Successful exploitation of this vulnerability could lead to remote code execution and compromise of the affected system. id: CVE-2021-35395 info: name: RealTek Jungle SDK - Arbitrary Command Injection...

curl: ssh_config_matches is dead code: unauthorized SSH key reuse

Summary libcurl's SSH connection-reuse guard sshconfigmatches — added for CVE-2022-27782 and reaffirmed by CVE-2023-27538 — is dead code in every release since 7.83.1. It compares sshc-rsa / sshc-rsapub between a new transfer "needle" and a pooled connection, but on both sides those pointers are...

curl: mbedTLS / wolfSSL / rustls backends silently skip hostname verification when CURLOPT_SSL_VERIFYPEER=0

Summary When an application sets CURLOPTSSLVERIFYPEER=0 while keeping CURLOPTSSLVERIFYHOST=2 the default, the mbedTLS, wolfSSL, and rustls TLS backends silently skip the hostname-vs-certificate check. The OpenSSL, GnuTLS, and Schannel backends correctly preserve hostname checking under the same...

libcurl 8.13.0 < 8.21.0 Use-After-Free in Socket Callback

The version of libcurl installed on the remote host is 8.13.0 prior to 8.21.0. It is, therefore, affected by a use-after-free vulnerability: - Calling curleasypause within the event-based CURLMOPTSOCKETFUNCTION callback triggers a use-after-free vulnerability. CVE-2026-9080 Note that Nessus has n...

Curl 8.18.0 < 8.21.0 QUIC Zero-Length UDP Datagrams DoS

The version of curl installed on the remote host is 8.18.0 prior to 8.21.0. It is, therefore, affected by a denial of service vulnerability: - An issue in curl's QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service by continuously streaming empty...

Curl 8.16.0 < 8.21.0 WebSocket Auto-PONG Memory Exhaustion

The version of curl installed on the remote host is 8.16.0 prior to 8.21.0. It is, therefore, affected by a denial of service vulnerability: - Because curl lacks an upper bound on memory allocation for unacknowledged WebSocket frames, a malicious server can exhaust all available memory by floodin...

Curl 8.15.0 < 8.21.0 SASL Double-Free

The version of curl installed on the remote host is 8.15.0 prior to 8.21.0. It is, therefore, affected by a double-free vulnerability: - 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...

Curl 7.46.0 < 8.21.0 Trailing Dot Domain Super Cookie

The version of curl installed on the remote host is 7.46.0 prior to 8.21.0. It is, therefore, affected by a cookie injection vulnerability: - A flaw in curl's cookie parsing logic allows a malicious HTTP server to set super cookies that bypass the Public Suffix List check. CVE-2026-8924 Note that...

Curl 7.81.0 < 8.21.0 Proto-Default Skips SSH Verification

The version of curl installed on the remote host is 7.81.0 prior to 8.21.0. It is, therefore, affected by an improper host validation vulnerability: - When a user invokes curl using a schemeless URL combined with --proto-default sftp, a disconnect occurs that erroneously bypasses the initializati...

Curl 7.30.0 < 8.21.0 Wrong STARTTLS Connection Reuse

The version of curl installed on the remote host is 7.30.0 prior to 8.21.0. It is, therefore, affected by an improper certificate validation vulnerability: - A vulnerability exists where a new transfer that uses STARTTLS to upgrade the connection might reuse an existing live connection even thoug...

Curl 8.11.1 < 8.21.0 Netrc Password Leak

The version of curl installed on the remote host is 8.11.1 prior to 8.21.0. It is, therefore, affected by a credential disclosure vulnerability: - When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a username, curl could wrongly get and use the...

Curl 8.11.0 < 8.21.0 HTTP/3 Early Data Information Disclosure

The version of curl installed on the remote host is 8.11.0 prior to 8.21.0. It is, therefore, affected by an information disclosure vulnerability: - When libcurl returns to a hostname with a cached SSL session and early data enabled, libcurl might send the request bytes before enforcing the...

UBUNTU-CVE-2026-8925

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...

UBUNTU-CVE-2026-8458

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When...

CURL-CVE-2026-8924 trailing dot domain super cookie

A flaw in curl’s cookie parsing logic allows a malicious HTTP server to set "super cookies" that bypass the Public Suffix List check. This enables an attacker-controlled origin to inject cookies that curl subsequently scopes and transmits to unrelated third-party domains...

CURL-CVE-2026-9080 UAF after pause in socket callback

Calling curleasypause within the event-based CURLMOPTSOCKETFUNCTION callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed...

UAF after pause in socket callback

Calling curleasypause within the event-based CURLMOPTSOCKETFUNCTION callback triggers a use-after-free vulnerability, where libcurl attempts to store a flag using a dangling struct pointer immediately after that pointer's memory has been freed...

CURL-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...

CURL-CVE-2026-11564 Native CA trust persist

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same handle to custom CA...