12404 matches found
curl: curl: Man-in-the-middle attack via SSH host key bypass
A flaw was found in curl. When a libcurl-based application uses SCP:// or SFTP:// for transfers and employs the CURLOPTSSHKEYFUNCTION callback, it may silently accept an untrusted server. This occurs if the server's host key type differs from the one stored in the knownhosts file. The callback...
libcurl: libcurl: Use-after-free via curl_easy_pause() in CURLMOPT_SOCKETFUNCTION callback
A flaw was found in libcurl. When curleasypause is called within the event-based CURLMOPTSOCKETFUNCTION callback, a use-after-free vulnerability is triggered. This occurs because libcurl attempts to store a flag using a pointer to memory that has already been freed. An attacker could potentially...
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: Insecure connection establishment due to TLS configuration mismatch
A flaw was found in curl. When a new data transfer attempts to upgrade its connection using STARTTLS, it may incorrectly reuse an existing live connection. This reuse can occur even if the Transport Layer Security TLS configuration of the new transfer does not match the existing connection,...
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...
curl: curl: Cookie injection via malicious HTTP server using super cookies
A flaw was found in curl's cookie parsing logic. A malicious HTTP server can exploit this by setting 'super cookies' that bypass the Public Suffix List check. This allows an attacker-controlled origin to inject cookies that curl then transmits to unrelated third-party domains, leading to...
curl:curl_fuzzer_gopher: Heap-buffer-overflow in gid_cb
Project: https://github.com/curl/curl.git Detailed Report: https://oss-fuzz.com/testcase?key=5200332595200000 Project: curl Fuzzing Engine: libFuzzer Fuzz Target: curlfuzzergopher Job Type: libfuzzerasancurl Platform Id: linux Crash Type: Heap-buffer-overflow READ 2 Crash Address: 0x7ad33ebeaec0...
Security Bulletin: Multiple vulnerabilities impacts AIX due to cURL libcurl (CVE-2026-1965, CVE-2026-3783, CVE-2026-3784)
Summary Multiple vulnerabilities in the curl/libcurl are related to unauthorized access. Vulnerability Details CVEID:CVE-2026-1965 DESCRIPTION: libcurl can in some circumstances reuse the wrong connection when asked to do an Negotiate-authenticated HTTP or HTTPS request. libcurl features a pool o...
USN-8487-1: curl vulnerabilities
Andrew Nesbitt discovered that curl could reuse an existing live connection during STARTTLS-based connection upgrades even when the TLS configuration did not match. A remote attacker could possibly use this issue to cause curl to use an unintended TLS configuration. CVE-2026-8286 Muhamad Arga...
mariadb: Arbitrary shell command execution via improper sanitization in CONNECT engine
A flaw was found in MariaDB server. When the CONNECT engine is installed and REST support is enabled on Windows, a user can exploit improper sanitization of the table HTTP attribute. This attribute is interpolated into the curl command line, allowing for arbitrary shell command execution on the...
mariadb: Arbitrary shell command execution via improper sanitization in CONNECT engine
A flaw was found in MariaDB server. When the CONNECT engine is installed and REST support is enabled on Windows, a user can exploit improper sanitization of the table HTTP attribute. This attribute is interpolated into the curl command line, allowing for arbitrary shell command execution on the...
Security update for curl
This update for curl fixes the following issues CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. CVE-2026-5545: wrong reuse of HTTP Negotiate connection bsc1262632. CVE-2026-5773: wrong reuse of SMB connection bsc1262633. CVE-2026-6253: proxy credentials leak over redirect-to...
SUSE-SU-2026:2703-1 Security update for curl
This update for curl fixes the following issues - CVE-2026-4873: connection reuse ignores TLS requirement bsc1262631. - CVE-2026-5545: wrong reuse of HTTP Negotiate connection bsc1262632. - CVE-2026-5773: wrong reuse of SMB connection bsc1262633. - CVE-2026-6253: proxy credentials leak over...
curl: heap-use-after-free in curl_easy_cleanup() called from callback
Summary: Curlclose lib/url.c:214 calls curlmultiremovehandledata-multi, data and ignores the return value. When curleasycleanup is invoked from within a write/read/progress/header callback, multi-incallback is TRUE, so curlmultiremovehandle lib/multi.c:818-819 returns CURLMRECURSIVEAPICALL withou...
mariadb: Arbitrary shell command execution via improper sanitization in CONNECT engine
A flaw was found in MariaDB server. When the CONNECT engine is installed and REST support is enabled on Windows, a user can exploit improper sanitization of the table HTTP attribute. This attribute is interpolated into the curl command line, allowing for arbitrary shell command execution on the...
mariadb: Arbitrary shell command execution via improper sanitization in CONNECT engine
A flaw was found in MariaDB server. When the CONNECT engine is installed and REST support is enabled on Windows, a user can exploit improper sanitization of the table HTTP attribute. This attribute is interpolated into the curl command line, allowing for arbitrary shell command execution on the...
curl: setopt(VERIFYPEER) from callback bypasses TLS verify on connection reuse
Summary: Curlsslconnconfigupdate overwrites conn-sslconfig.verifypeer when curleasysetoptCURLOPTSSLVERIFYPEER, ... is called, with no handshake-state guard — only ifdata-conn. Since setopt is documented as callable from callbacks setopt.c:2930, an application can connect with verifypeer=0 accepti...
Security Bulletin: Multiple vulnerabilities impacts AIX due to cURL libcurl (CVE-2025-14819, CVE-2026-1965, CVE-2026-3783, CVE-2026-3784, CVE-2026-5545)
Summary Multiple vulnerabilities in the curl/libcurl are related to TLS certificate validation logic and unauthorized actions. Vulnerability Details CVEID:CVE-2025-14819 DESCRIPTION: When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPTNOPARTIALCHAIN optio...
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...