Red Hat Product Errata RHSA-2026:54191 - Security Advisory
Issued:
2026-08-12
Updated:
2026-08-12

RHSA-2026:54191 - Security Advisory

Synopsis

Important: rhc-worker-script security update

Type/Severity

Security Advisory: Important

Red Hat Lightspeed patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for rhc-worker-script is now available for Red Hat Enterprise Linux 7 Extended Lifecycle 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.

Description

Remote Host Configuration (rhc) worker for executing scripts on hosts managed by Red Hat Lightspeed.

Security Fix(es):

  • net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)
  • google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186)
  • golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)
  • crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)
  • crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)
  • net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811)
  • golang.org/x/net/idna: golang: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

  • Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64

Fixes

  • BZ - 2445356 - CVE-2026-25679 net/url: Incorrect parsing of IPv6 host literals in net/url
  • BZ - 2449833 - CVE-2026-33186 google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation
  • BZ - 2456336 - CVE-2026-32282 golang: internal/syscall/unix: Root.Chmod can follow symlinks out of the root
  • BZ - 2456338 - CVE-2026-32283 crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages
  • BZ - 2456339 - CVE-2026-32280 crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building
  • BZ - 2467822 - CVE-2026-33811 net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME
  • BZ - 2480756 - CVE-2026-39821 golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing

Red Hat Enterprise Linux Server - Extended Life Cycle Support 7

SRPM
rhc-worker-script-0.11-1.el7_9.src.rpm SHA-256: c53278648348b56a4e2c15d9e5baa22f0d709d32fc5a53ca7b4932e9c73336a2
x86_64
rhc-worker-script-0.11-1.el7_9.x86_64.rpm SHA-256: 2e9768b8064a5278944046f3ca5d8f6e3bb7f71644bddb55ed910cbab8c692d2

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.