curl: MQTT: unsigned integer underflow bypasses MAX_MQTT_MESSAGE_SIZE check

Summary An unsigned integer underflow exists in libcurl's MQTT publish path. Due to incorrect arithmetic ordering in the size validation logic, oversized MQTT PUBLISH messages are not rejected as intended. Affected version libcurl 8.18.0 Tested on macOS arm64 with AddressSanitizer enabled. Steps ...

curl: Digest Authentication Header Injection

Summary The Digest authentication implementation in libcurl fails to properly escape the uri parameter in the Authorization header. While other parameters like username, realm, and nonce are correctly escaped using authdigeststringquoted, the uri is inserted raw into the header. This allows an...

curl: Use-After-Free in curl_easy_nextheader when reusing header handle across requests

. The API returns struct curlheader objects that internally reference libcurl-owned linked list nodes. When a new request is performed on the same CURL handle, libcurl frees and rebuilds the internal header list, but previously returned struct curlheader objects remain valid to the application an...

CryptoLib 安全漏洞

CryptoLib is a NASA open source application. It is used to provide a software-only solution using the CCSDS space data link security protocol. A security vulnerability exists in CryptoLib versions prior to 1.4.3 that originates in the libcurl writecallback function of the KMC Cryptographic Servic...

CVE-2023-4325

Broadcom RAID Controller web interface is vulnerable due to usage of Libcurl with LSA has known vulnerabilities...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the handling of TLS transfers when reusing easy or multi handles and modifying the CURLSSLOPTNOPARTIALCHAIN option. An attacker can cause the application to accept an unintended trust chain by exploiti...

Unsynchronized Access to Shared Data in a Multithreaded Context

Overview Affected versions of this package are vulnerable to Unsynchronized Access to Shared Data in a Multithreaded Context during the LDAPS transfers. An attacker can impact the security of concurrent transfers by manipulating TLS settings in one thread, which may inadvertently alter the global...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the CURLOPTPINNEDPUBLICKEY option or --pinnedpubkey with the curl tool. An attacker can intercept or impersonate a server by exploiting the lack of public key verification when a connection is...

ALPINE-CVE-2025-15079

When doing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl could still mistakenly accept connecting to hosts not present in the specified file if they were added as recognized in the libssh global knownhosts file...

CVE-2025-14819

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPTNOPARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcur...

ALPINE-CVE-2025-14017

When doing multi-threaded LDAPS transfers LDAP over TLS with libcurl, changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. Disabling certificate verification for a specific transfer could unintentionally...

AZL-73736 CVE-2025-14017 affecting package cmake for versions less than 3.30.3-11

When doing multi-threaded LDAPS transfers LDAP over TLS with libcurl, changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. Disabling certificate verification for a specific transfer could unintentionally...

CVE-2025-14017

When doing multi-threaded LDAPS transfers LDAP over TLS with libcurl, changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. Disabling certificate verification for a specific transfer could unintentionally...

CVE-2025-15079

CVE-2025-15079 affects curl/libcurl when using SSH-based transfers (SCP/SFTP) with a libssh backend. The vulnerability arises in known_hosts handling: even if a per-file known_hosts is used, connections could be accepted for hosts not present in that file if they are recognized in the libssh glob...

CVE-2025-15079 libssh global known_hosts override

When doing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl could still mistakenly accept connecting to hosts not present in the specified file if they were added as recognized in the libssh global knownhosts file...

CVE-2025-15079 libssh global known_hosts override

When doing SSH-based transfers using either SCP or SFTP, and setting the knownhosts file, libcurl could still mistakenly accept connecting to hosts not present in the specified file if they were added as recognized in the libssh global knownhosts file...

CVE-2025-14819 OpenSSL partial chain store policy bypass

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPTNOPARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcur...

CVE-2025-14819 OpenSSL partial chain store policy bypass

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPTNOPARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcur...

CVE-2025-14819

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPTNOPARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcur...

CVE-2025-14017 broken TLS options for threaded LDAPS

When doing multi-threaded LDAPS transfers LDAP over TLS with libcurl, changing TLS options in one thread would inadvertently change them globally and therefore possibly also affect other concurrently setup transfers. Disabling certificate verification for a specific transfer could unintentionally...