OPENSUSE-SU-2026:21705-1: go1.26-openssl security update

OPENSUSE-SU-2026:21705-1, released August 30, 2026, fixes 9 CVEs in go1.26-openssl (version 1.26.7-160000.1.1). None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

1 rated Critical

Exploited

None reported

Highest CVSS

10.0

Base score, 0 to 10

Highest EPSS

0.0183

79th percentile

Priority of the 9 CVEs

Patch now 0
                                Urgent 1
                                High 8
                                Routine 0

Fixed package versions

Product	Release	Fixed in
go1.26-openssl	opensuse-leap 16.0	1.26.7-160000.1.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-39821	Invoking failure to reject ASCII-only Punycode-encoded labels in golang.org/x/net/idna	10.0	0.0183	None reported
High	CVE-2026-33818	Enforce maximum recursion depth in encoding/asn1	8.8	0.0057	None reported
High	CVE-2026-56853	Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http	8.8	0.0057	None reported
High	CVE-2026-56859	Add recursion depth guard during decode in encoding/xml	8.8	0.0057	None reported
High	CVE-2026-56862	Limit handshake messages we are willing to accept post-handshake in crypto/tls	8.8	0.0057	None reported
High	CVE-2026-56860	Avoid quadratic complexity in resolvePath in net/url	8.8	0.0055	None reported
High	CVE-2026-56858	Fix Javascript regexp context tracking in html/template	8.8	0.0031	None reported
High	CVE-2026-56864	Ignore unrelated, unauthenticated hashes in Lookup in golang.org/x/mod/sumdb	7.5	0.0030	None reported
High	CVE-2026-56865	Fix transparency log tile verification bypass in golang.org/x/mod/sumdb/tlog	8.4	0.0013	None reported

Also fixes CVE-2026-39821

OPENSUSE-SU-2026:22158-1
docker on opensuse-leap 16.0
SUSE-SU-2026:22558-1
google-osconfig-agent on sles 16.0
OPENSUSE-SU-2026:22026-1
prometheus-blackbox_exporter on opensuse-leap 16.0
SUSE-SU-2026:4606-1
golang-github-prometheus-prometheus on sles 15.7
OPENSUSE-SU-2026:21205-1
docker-stable on opensuse-leap 16.0
SUSE-SU-2026:23625-1
govulncheck-vulndb on sles 16.0
OPENSUSE-SU-2026:21761-1
govulncheck-vulndb on opensuse-leap 16.0
OPENSUSE-SU-2026:21824-1
containerized-data-importer1.65 on opensuse-leap 16.0

Vendor advisory

https://osv.dev/vulnerability/openSUSE-SU-2026:21705-1

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