Red Hat alert RHSA-2026:70641-01 (skopeo)

An update for skopeo is now available for Red Hat Enterprise Linux 9.

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.

Command line utility to inspect images and repositories directly on Docker
registries without the need to pull them.

Security Fix(es):

* skopeo: Go html/template: Cross-Site Scripting via pathological input
(CVE-2026-56858)

* skopeo: Go encoding/asn1: Denial of Service via excessive recursion in
Unmarshal (CVE-2026-33818)

* skopeo: golang net/url: Denial of Service from quadratic complexity in path
resolution (CVE-2026-56860)

* skopeo: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of
Service (CVE-2026-56853)

* skopeo: Golang crypto/tls: Denial of Service via indefinite KeyUpdate
messages (CVE-2026-56862)

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.

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Original: https://access.redhat.com/security/data/csaf/v2/advisories/2026/rhsa-2026_70641.json