12266 matches found
HSTS response erases persisted entries
An authenticated HTTPS origin can supply an HSTS max-age value that the parser accepts, but time serialization later fails to process. On 64-bit systems, extreme max-age values compute an absolute expiry within standard time integer limits that exceeds calendar time structure bounds. During cache...
IMAP APPEND plus CRLF conversion command injection
Enabling CURLOPTCRLF causes curl to advertise the raw input byte count in the IMAP APPEND N literal while transmitting line-ending expanded data. The server reads only $N$ bytes for the payload, causing the remaining overflow bytes to be interpreted and executed as pipelined IMAP commands within...
local interface connection reuse mixup
When CURLOPTINTERFACE or the command line tool's --interface option is set with one of the documented prefixes if!, host!, ifhost!, that binding is not part of the connection reuse key, so a later transfer asking for a different source can silently reuse an existing connection and go out from the...
CURL-CVE-2026-87862 HSTS cache import drops longer-lived child
Importing a includeSubDomains parent HSTS entry before a longer-lived child entry, silently drops the child. Consequently, when the parent expires, the child's valid HSTS policy is lost, causing curl to issue unencrypted HTTP requests rather than upgrading to HTTPS...
HTTP/2 upload Use-After-Free
During an upload, curl mishandles HTTP/2 RSTSTREAM received from the server with reason HTTP11REQUIRED or REFUSEDSTREAM leading to a use after free of a struct Curleasy object...
CURL-CVE-2026-92392 HTTP/2 upload Use-After-Free
During an upload, curl mishandles HTTP/2 RSTSTREAM received from the server with reason HTTP11REQUIRED or REFUSEDSTREAM leading to a use after free of a struct Curleasy object...
CURL-CVE-2026-86409 stale SigV4 headers sent unintended
Setting CURLOPTAWSSIGV4 to NULL but does not disable SigV4 authentication, contrary to expectations and documentation. A subsequent transfer on the same handle still sends an Authorization: AWS4-HMAC-SHA256 header to whatever URL is set next, leaking state information...
CURL-CVE-2026-107928 info leak uploading over WebSockets with GnuTLS
When curl is built with GnuTLS, a malicious WebSocket server can make curl send memory past its send buffer. This is due to an out of bounds read following when gnutlsrecordsend returns a number of bytes sent greater than the number of bytes it was given to send. GnuTLS does that after a blocked...
CURL-CVE-2026-86411 FTP connection reuse inherits client-certificate
An ftp:// transfer configured with CURLUSESSLNONE can reuse a pooled FTP control connection that a previous easy handle upgraded with STARTTLS and authenticated using a client certificate. The second handle performs neither a new TLS handshake nor a new FTP login, so the server continues to...
CURL-CVE-2026-87861 cross-origin reuse of a Negotiate connection
When using ambient user credentials, an HTTP request directed to one origin may be dispatched over a connection previously authenticated via Negotiate for a different origin, leaving the request's intended credentials unused...
redirect to SFTP or SCP bypasses host verification
A flaw in the curl command line tool's logic makes it only set SSH host verification options when interacting directly using SFTP or SCP, and not as a result of following a redirect...
CURL-CVE-2026-87863 HSTS response erases persisted entries
An authenticated HTTPS origin can supply an HSTS max-age value that the parser accepts, but time serialization later fails to process. On 64-bit systems, extreme max-age values compute an absolute expiry within standard time integer limits that exceeds calendar time structure bounds. During cache...
CURL-CVE-2026-94265 Authorization: Negotiate sent to foreign origin
When processing an HTTP redirect to a URL containing userinfo a username:password component, curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl t...
CURL-CVE-2026-92386 server-set cookie aborts cookie jar load
When writing a long cookie name and value to a Netscape cookie jar, a remote HTTP server can make curl write a record that exceeds its line-length parsing limit. Consequently, any subsequent curl invocation reading from that same cookie jar using --cookie silently aborts parsing prematurely upon...
wolfSSL public-key pinning bypass
When built with wolfSSL, curl can successfully validate a pinned public key hash against a key the TLS peer does not possess. During the TLS handshake, wolfSSL validates the connection, but curl's subsequent re-parsing of the same certificate - tricked by a manipulated validity length field -...
CURL-CVE-2026-92390 -J no-clobber guarantee bypassed with 103 early hints
When invoked with --remote-header-name -J, curl fails to preserve its documented anti-clobbering protection if an intermediate 103 Early Hints response precedes the final HTTP response, or if an ETag header is processed before Content-Disposition under --etag-save. This flaw allows an HTTPS serve...
CURL-CVE-2026-107929 local interface connection reuse mixup
When CURLOPTINTERFACE or the command line tool's --interface option is set with one of the documented prefixes if!, host!, ifhost!, that binding is not part of the connection reuse key, so a later transfer asking for a different source can silently reuse an existing connection and go out from the...
CURL-CVE-2026-86410 redirect to SFTP or SCP bypasses host verification
A flaw in the curl command line tool's logic makes it only set SSH host verification options when interacting directly using SFTP or SCP, and not as a result of following a redirect...
CURL-CVE-2026-87866 wolfSSL public-key pinning bypass
When built with wolfSSL, curl can successfully validate a pinned public key hash against a key the TLS peer does not possess. During the TLS handshake, wolfSSL validates the connection, but curl's subsequent re-parsing of the same certificate - tricked by a manipulated validity length field -...
CURL-CVE-2026-87864 IMAP APPEND plus CRLF conversion command injection
Enabling CURLOPTCRLF causes curl to advertise the raw input byte count in the IMAP APPEND N literal while transmitting line-ending expanded data. The server reads only $N$ bytes for the payload, causing the remaining overflow bytes to be interpreted and executed as pipelined IMAP commands within...