The vulnerability of the libcurl library in software applications for interacting with servers via cURL allows a hacker to gain unauthorized access to protected information.

The vulnerability of the libcurl library in software applications for interacting with servers via cURL is related to the possibility of bypassing the authentication process. Exploiting this vulnerability can allow an attacker operating remotely to gain unauthorized access to protected informatio...

The vulnerability of the libcurl library in software tools for interacting with servers via cURL allows a hacker to perform an SSRF attack.

The vulnerability of the libcurl library in software applications for interacting with servers via cURL is related to insufficient validation of requests at the server side. Exploiting this vulnerability allows a remote attacker to execute a SSRF attack...

The vulnerability of the libcurl library in software applications for interacting with servers via cURL allows a hacker to gain unauthorized access to protected information.

The vulnerability of the libcurl library in software applications for interacting with servers via cURL is related to the transmission of data in an open manner. Exploiting this vulnerability can allow a remote attacker to gain unauthorized access to protected information...

CrashStealer macOS Malware Uses Notarized Dropper to Pass Gatekeeper Checks

Cybersecurity researchers have flagged a new macOS information stealer called CrashStealer that's capable of harvesting sensitive data from compromised systems. Unlike other information stealers that are built on AppleScript droppers or Objective-C-based wrappers, CrashStealer is implemented in...

PYSEC-2026-2431 curl_cffi: Redirect-based SSRF leads to internal network access in curl_cffi (with TLS impersonation bypass)

Summary curlcffi does not restrict requests to internal IP ranges, and follows redirects automatically via the underlying libcurl. Because of this, an attacker-controlled URL can redirect requests to internal services such as cloud metadata endpoints. In addition, curlcffi’s TLS impersonation...

SUSE 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...

SUSE CVE-2026-8927

When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed...

SUSE CVE-2026-8932

libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS...

SUSE CVE-2026-9079

libcurl had a flaw that when instructed to clear proxy authentication credentials which made it not do so, leaving the old credentials around to get used for subsequent transfers that should not know nor use them...

SUSE CVE-2026-9080

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...

SUSE CVE-2026-9545

In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certificate. When libcurl returns to the hostname the second time with a cached SSL...

SUSE CVE-2026-9546

A vulnerability in libcurl caused the HTTP Referer: header to persist even when explicitly cleared. While the documentation states that passing NULL to CURLOPTREFERER suppresses the header, the option failed to clear the internal state. As a result, the previous referrer string was erroneously...

SUSE CVE-2026-9547

When a libcurl-based application performs transfers via SCP:// or SFTP:// and utilizes the CURLOPTSSHKEYFUNCTION callback, it may silently accept an untrusted server. This vulnerability occurs when a server presents a host key type that does not match the specific key type already recorded for th...

SUSE CVE-2026-10536

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via CURLOPTSTREAMDEPENDS or CURLOPTSTREAMDEPENDSE, subsequently invokes curleasyreset, and finally terminates the handle with curleasycleanup. During this final cleanup phase, libcurl...

SUSE CVE-2026-11564

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...

libcurl 7.30.0 < 8.21.0 Wrong STARTTLS Connection Reuse (CVE-2026-8286)

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

libcurl 8.11.1 < 8.21.0 Netrc Wrong User Password Leak (CVE-2026-8926)

The version of libcurl installed on the remote host is 8.11.1 prior to 8.21.0. It is, therefore, affected by a credential leak vulnerability: - When asking curl to use a .netrc file to find credentials and at the same time specifying a URL with a username without a password, curl could wrongly ge...

libcurl 8.15.0 < 8.21.0 SASL Double-Free (CVE-2026-8925)

The version of libcurl 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 t...

libcurl 7.46.0 < 8.21.0 Super Cookie PSL Bypass (CVE-2026-8924)

The version of libcurl 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. This enables an...

libcurl 8.11.0 < 8.21.0 HTTP/3 Early Data Information Disclosure (CVE-2026-9545)

The version of libcurl 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...