curl 8.18.0-1ubuntu2.8: curl 8.18.0-1ubuntu2.8 for Ubuntu 26.04.1 LTS (resolute)

curl 8.18.0-1ubuntu2.8, released November 7, 2026, fixes 18 CVEs in curl. None of them is reported as exploited. Patch Radar priority: High.

High

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

8.2

Base score, 0 to 10

Highest EPSS

0.0128

70th percentile

Priority of the 18 CVEs

Patch now 0
                                Urgent 0
                                High 5
                                Routine 13

Fixed package versions

Product	Release	Fixed in
curl	Ubuntu 26.04.1 LTS (resolute)	8.18.0-1ubuntu2.8

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2026-92392	HTTP/2 upload Use-After-Free	8.1	0.0128	None reported
High	CVE-2026-86409	stale SigV4 headers sent unintended	8.1	0.0110	None reported
High	CVE-2026-87864	IMAP APPEND plus CRLF conversion command injection	8.2	0.0083	None reported
High	CVE-2026-86414	leaking host credentials to HTTP proxy	7.5	0.0068	None reported
High	CVE-2026-107929	local interface connection reuse mixup	8.1	0.0067	None reported
Routine	CVE-2026-92391	curl_mime_free stack overflow by recursion	5.5	0.0117	None reported
Routine	CVE-2026-92387	never-ending loop via server response omission	5.3	0.0105	None reported
Routine	CVE-2026-87862	HSTS cache import drops longer-lived child	4.8	0.0100	None reported
Routine	CVE-2026-87863	HSTS response erases persisted entries	6.5	0.0083	None reported
Routine	CVE-2026-92386	server-set cookie aborts cookie jar load	3.7	0.0083	None reported
Routine	CVE-2026-86412	server-set cookie erases cookie jar	3.3	0.0083	None reported
Routine	CVE-2026-86410	redirect to SFTP or SCP bypasses host verification	5.9	0.0077	None reported
Routine	CVE-2026-92389	TFTP direction confusion	5.9	0.0072	None reported
Routine	CVE-2026-107928	info leak uploading over WebSockets with GnuTLS	3.7	0.0071	None reported
Routine	CVE-2026-92388	libcurl3-gnutls: When an FTP wildcard `LIST` operation fails, libcurl omits the restoration path meant for successful listings, leavin...	n/a	0.0070	None reported
Routine	CVE-2026-87865	knownhost callback mismatches key as missing	6.8	0.0060	None reported
Routine	CVE-2026-92390	-J no-clobber guarantee bypassed with 103 early hints	6.5	0.0059	None reported
Routine	CVE-2026-94266	password leak in CURLINFO_EFFECTIVE_URL	5.9	0.0056	None reported

Also fixes CVE-2026-92392

SUSE-SU-2026:5068-1
curl on sles 15.7
SUSE-SU-2026:5069-1
curl on sles 15.6
libcurl3t64-gnutls 8.18.0-1ubuntu2.8
libcurl3t64-gnutls on Ubuntu 26.04.1 LTS (resolute)
libcurl4t64 8.18.0-1ubuntu2.8
libcurl4t64 on Ubuntu 26.04.1 LTS (resolute)
RLSA-2026:96092
curl on rocky 10
ELSA-2026-96092
curl, libcurl, libcurl-devel and 1 more on ol 10
ALSA-2026:96092
curl, libcurl, libcurl-devel and 1 more on almalinux 10
RHSA-2026:96092
curl on RHEL 10

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