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Vulnerabilities

Vulnerability · RLSA-2026:86203

Important: go-toolset:rhel8 security, bug fix, and enhancement update

Published Oct 21, 2026 · catalog updated Oct 21, 2026 · Important: go-toolset:rhel8 security, bug

Last checked Oct 21, 2026, 11 days ago.

Open the advisory

Exploitation likelihood is not on this record for RLSA-2026:86203. A missing EPSS score is not a low risk. Compare Important: go-toolset:rhel8 security, bug with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Important: go-toolset:rhel8 security, bug).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Advisory link
Affected products
Rocky Linux:8 delve

Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667) * crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) * net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) * golang: crypto/x509: Go: crypto/x509: mitigation for security concerns with a specific Certificate Authority (CVE-2026-111943) Bug Fix(es) and Enhancement(s): * Update Go to version 1.26.10+1 [rhel-8.10.z] (JIRA:Rocky Linux-287193) 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Rocky Linux:8 delve0 → 0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8

How to fix RLSA-2026:86203

  • Upgrade

    RLSA-2026:86203 lists a fix boundary at 0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8. Compare the installed build with that boundary before you change production.

  • Version check

    Fixed in 0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for RLSA-2026:86203. A missing EPSS score is not a low risk. Compare Important: go-toolset:rhel8 security, bug with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0 → 0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Atlassian Jira security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667) * crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) * net/http: net/http/internal/http2: golang.org/x/net/http2: net/http

  2. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    delve fixed in 0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8

  3. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    delve fixed in 0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8

  4. Oct 21, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667) * crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) * net/http: net/http/internal/http2: golang.org/x/net/http2: net/http

Sources

References

Freshness

Last verified in this catalog Oct 21, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • OpenSSF OSV / OSV ScannerOct 21, 2026