RHSA-2026:93454 — Security Advisory

An update for curl is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

Security Fix(es):

• curl: curl: Authentication bypass due to incorrect connection reuse with Negotiate authentication (CVE-2026-1965)

• curl: curl: Information disclosure via OAuth2 bearer token leakage during HTTP(S) redirect (CVE-2026-3783)

• curl: curl: Man-in-the-middle attack via SSH host key bypass (CVE-2026-9547)

• libcurl: libcurl: Security feature bypass due to improper mTLS connection reuse (CVE-2026-8932)

• curl: curl: Insecure connection establishment due to TLS configuration mismatch (CVE-2026-8286)

• curl: libcurl: Unauthorized connection reuse due to a logical error (CVE-2026-8458)

• curl: curl: Cookie injection via malicious HTTP server using super cookies (CVE-2026-8924)

• curl: curl: Information disclosure via incorrect Digest authentication header reuse (CVE-2026-11856)

• curl: Information disclosure due to uncleared proxy authentication state (CVE-2026-8927)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.