Exploit for Use After Free in Haxx Curl

CVE-2026-3805: Use-After-Free in curl SMB Connection Reuse I...

curl: Integer Overflow/Signedness Mismatch in Printf Precision for HTTP/2 Trailer Headers

BUG IN https://raw.githubusercontent.com/curl/curl/07a9b89fedaec60bdbc254f23f66149b31d2f8da/lib/http2.c c ifstream-bodystarted / This is a trailer / H2BUGFinfofdatas, "h2 trailer: %.s: %.s", namelen, name, valuelen, value; result = Curldynaddf&stream-trailerrecvbuf, "%.s: %.s\r\n", namelen, name,...

ClickFix finds a new way to infect Macs

ClickFix campaigns are looking for alternatives now that many Mac users have been made aware of the dangers of pasting certain commands into Terminal. Researchers found that ClickFix has kept the same social engineering playbook but completely sidestepped Terminal by using the applescript:// URL...

Malicious code in @genoma-ui/components (npm)

Malicious package detected. It uses pre/post install scripts to download/execute code and exfiltrate user data via curl from a hardcoded IP. --- -= Per source details. Do not edit below this line.=- Source: amazon-inspector a5fb9acd5bf2a73c82be9ac19b7c0cad285cfea2a4b6ff69655f61e7e4a0c26c The...

ROS-20260410-73-0015

Vulnerability in curl related to authentication bypass due to an initial bug. Exploitation of the vulnerability could allow an attacker acting remotely to escalate their privileges...

ROS-20260410-73-0013

Vulnerability in curl related to access control flaws. Exploitation of the vulnerability could allow an attacker to escalate privileges...

ROS-20260410-73-0016

Vulnerability in curl related to authentication bypass due to an initial bug. Exploitation of the vulnerability could allow an attacker acting remotely to escalate their privileges...

The vulnerability of the software for interacting with servers via cURL lies in the ability to utilize memory after it is released, allowing a hacker to cause a service failure.

The vulnerability of the software for interacting with servers via cURL is related to the possibility of using memory after it is freed. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

CVE-2026-33752

curlcffi is the a Python binding for curl. Prior to 0.15.0, 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...

curl: curl: Unauthorized access due to improper HTTP proxy connection reuse

A flaw was found in curl. This vulnerability allows curl to wrongly reuse an existing HTTP proxy connection when performing a CONNECT request to a server, even if the new request uses different authentication credentials for the HTTP proxy. This improper connection reuse could lead to an attacker...

curl: Information disclosure via cross-protocol redirect with OAuth2 bearer token

A flaw was found in curl. When an OAuth2 Open Authorization bearer token is used for an HTTPS transfer, and that transfer performs a cross-protocol redirect to a different scheme like IMAP, LDAP, POP3, or SMTP, curl might incorrectly pass the bearer token to the new target host. This could lead t...

curl: curl: Arbitrary code execution or Denial of Service via use-after-free in SMB request handling

A flaw was found in curl. When handling a second Server Message Block SMB request to the same host, curl incorrectly accesses memory that has already been freed. This memory corruption vulnerability, known as a use-after-free, could allow a remote attacker to potentially execute arbitrary code or...

curl: curl: Authentication bypass due to incorrect connection reuse with Negotiate authentication

A flaw was found in curl. When an application uses libcurl to make multiple Negotiate-authenticated HTTP or HTTPS requests to the same server with different credentials, libcurl may incorrectly reuse an existing connection. This logical error can cause a subsequent request to be sent using the...

curl: curl: Security bypass due to global TLS option changes in multi-threaded LDAPS transfers

A flaw was found in curl. When performing multi-threaded LDAPS Lightweight Directory Access Protocol Secure transfers, changes to Transport Layer Security TLS options in one thread could inadvertently apply globally, affecting other concurrent transfers. This could lead to unintended security...

curl: predictable WebSocket mask

A flaw was found in curl. The use of a predictable WebSocket mask pattern allows a malicious server to induce traffic that an intermediary proxy whether configured or transparent will misinterpret as a standard HTTP request. This confusion leads to a cache poisoning attack, where the proxy stores...

curl: libcurl: Curl out of bounds read for cookie path

An out of bounds read flaw has been discovered in the curl project. Under specific conditions the path comparison logic makes curl read outside a heap buffer boundary. This bug either causes a crash or it potentially makes the comparison come to the wrong conclusion and lets the clear-text site...

curl: Host verification bypass during SSH transfers

A flaw was found in curl. When performing SSH-based transfers using SCP or SFTP, libcurl could mistakenly connect to hosts not listed in the user-specified knownhosts file. This occurs if the host is present in the libssh global knownhosts file, effectively bypassing the intended host verificatio...

Moderate: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: curl: curl-8.19.0-3.hum1 aarch64, x8664 libcurl-8.19.0-3.hum1 aarch64, x8664 libcurl-devel-8.19.0-3.hum1 aarch64, x8664 libcurl-minimal-8.19.0-3.hum1 aarch64, x8664 curl-8.19.0-3.hum1.src source...

curl: curl: Information disclosure via OAuth2 bearer token leakage during HTTP(S) redirect

A flaw was found in curl. When an OAuth2 bearer token is used for an HTTPS transfer that redirects to a second URL, curl could unintentionally leak the token. This occurs if the second hostname has entries in the .netrc file, allowing the bearer token intended for the first host to be sent to the...

CVE-2026-33752

CVE-2026-33752 affects the Python binding curl_cffi for libcurl. Before version 0.15.0, curl_cffi does not restrict outbound requests to internal IP ranges and follows redirects automatically via libcurl. This enables an attacker-controlled URL to redirect to internal services (e.g., cloud metada...