CVE-2026-87863

The curl tool is vulnerable to data loss when persistent HTTP Strict Transport Security (HSTS) caching is enabled. An authenticated HTTPS origin can provide an extreme max-age value that the parser accepts but fails during time serialization on 64-bit systems. Because curl truncates the original ...

CVE-2026-87863

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...

EUVD-2026-105310

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...

CVE-2026-87864

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...

CVE-2026-87864

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...

CVE-2026-87864

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...

CVE-2026-87864

The curl library is vulnerable to a command injection flaw when using IMAP APPEND commands with CURLOPT_CRLF enabled. The root cause is that curl advertises the raw input byte count in the IMAP APPEND {N} literal while transmitting expanded line-ending data. Consequently, the server reads only $N...

CVE-2026-87862

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...

EUVD-2026-105309

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...

CVE-2026-87862

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...

CVE-2026-87862

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...

CVE-2026-87862

The curl tool is vulnerable to a flaw in how it imports HTTP Strict Transport Security (HSTS) cache records. When a parent domain entry using includeSubDomains is imported before a longer-lived subdomain entry, the subdomain policy is silently dropped . This causes curl to fail to upgrade connect...

EUVD-2026-105279

When using an ambient user in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there...

CVE-2026-86413

When using an ambient user in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there...

CVE-2026-86413 Negotiate credentials sent to redirected origin

When using an ambient user in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there...

CVE-2026-86413

When using an ambient user in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there...

CVE-2026-86413

The curl utility contains a flaw where it may leak sensitive Negotiate authentication credentials (specifically system-provided Kerberos credentials) to an unrelated second origin. This occurs when using an ambient user during a first transfer and the client is configured to follow HTTP redirects...

CVE-2026-86413

When using an ambient user in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there...

CVE-2026-86412

A remote HTTP server can set a cookie that curl accepts and writes to a Netscape cookie jar but cannot reload. On the next invocation using the same path for --cookie and --cookie-jar, curl fails before connecting, then the cleanup procedure replaces the jar with an empty file, deleting cookies f...

CVE-2026-86412

The curl command-line tool is vulnerable to a denial of service where a remote HTTP server can set a cookie that curl accepts and writes to a Netscape cookie jar but cannot reload. During a subsequent invocation using the same path for --cookie and --cookie-jar, curl fails before connecting, trig...