RHSA-2026:95638: Important: go-toolset:rhel8 security update

Published Nov 5, 2026
·
Updated

Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943) 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.

Other sources

Important: go-toolset:rhel8 security update

— Red Hat

Affected Software

38 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for Power, little endian
redhat/delve<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/golang<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-docs<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-misc<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-src<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-tests<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/delve<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/delve-debuginfo<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/delve-debugsource<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/go-toolset<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-bin<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-race<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/go-toolset<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-bin<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-race<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/delve<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/delve-debuginfo<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/delve-debugsource<1.26.1-2.module+el8.10.0+25288+9abe63b5
1.26.1-2.module+el8.10.0+25288+9abe63b5
redhat/go-toolset<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-bin<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/golang-race<1.26.10-1.module+el8.10.0+25107+6b50279c
1.26.10-1.module+el8.10.0+25107+6b50279c
redhat/delve<1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
redhat/delve-debuginfo<1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
redhat/delve-debugsource<1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
redhat/go-toolset<1.26.10-1.module+el8.10.0+25107+6b50279c.aa
1.26.10-1.module+el8.10.0+25107+6b50279c.aa
redhat/golang<1.26.10-1.module+el8.10.0+25107+6b50279c.aa
1.26.10-1.module+el8.10.0+25107+6b50279c.aa
redhat/golang-bin<1.26.10-1.module+el8.10.0+25107+6b50279c.aa
1.26.10-1.module+el8.10.0+25107+6b50279c.aa
redhat/golang-race<1.26.10-1.module+el8.10.0+25107+6b50279c.aa
1.26.10-1.module+el8.10.0+25107+6b50279c.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/delve to a version that resolves this vulnerability.

    Fixed in 1.26.1-2.module+el8.10.0+25288+9abe63b5
  2. Upgrade

    Upgrade redhat/golang to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  3. Upgrade

    Upgrade redhat/golang-docs to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  4. Upgrade

    Upgrade redhat/golang-misc to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  5. Upgrade

    Upgrade redhat/golang-src to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  6. Upgrade

    Upgrade redhat/golang-tests to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  7. Upgrade

    Upgrade redhat/delve-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.1-2.module+el8.10.0+25288+9abe63b5
  8. Upgrade

    Upgrade redhat/delve-debugsource to a version that resolves this vulnerability.

    Fixed in 1.26.1-2.module+el8.10.0+25288+9abe63b5
  9. Upgrade

    Upgrade redhat/go-toolset to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  10. Upgrade

    Upgrade redhat/golang-bin to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  11. Upgrade

    Upgrade redhat/golang-race to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c
  12. Upgrade

    Upgrade redhat/delve to a version that resolves this vulnerability.

    Fixed in 1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
  13. Upgrade

    Upgrade redhat/delve-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
  14. Upgrade

    Upgrade redhat/delve-debugsource to a version that resolves this vulnerability.

    Fixed in 1.26.1-2.module+el8.10.0+25288+9abe63b5.aa
  15. Upgrade

    Upgrade redhat/go-toolset to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c.aa
  16. Upgrade

    Upgrade redhat/golang to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c.aa
  17. Upgrade

    Upgrade redhat/golang-bin to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c.aa
  18. Upgrade

    Upgrade redhat/golang-race to a version that resolves this vulnerability.

    Fixed in 1.26.10-1.module+el8.10.0+25107+6b50279c.aa

Event History

Nov 5, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·07:29 PM
Data Sourced
via Red Hat·07:29 PM
Severity

Frequently Asked Questions

1

What would an attacker need to exploit this issue?

The issue is described as enabling man-in-the-middle attacks through untrusted intermediate certificates. An attacker would need to be positioned to intercept or influence certificate validation in a relevant connection.

2

Which packages should be included in an exposure inventory?

The advisory lists redhat/go-toolset, redhat/golang, redhat/golang-bin, redhat/golang-race, redhat/delve, redhat/delve-debuginfo, and redhat/delve-debugsource. The affected platform listed is Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle.

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