rlsa-2026:38995
Vulnerability from osv_rocky
Published
2026-07-15 12:01
Modified
2026-07-27 18:07
Summary
Important: go-toolset:rhel8 security, bug fix, and enhancement update
Details

Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang.

Security Fix(es):

  • golang.org/x/net/idna: golang: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)

  • crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145)

  • os: golang: Go os.Root: Symlink following vulnerability allows directory traversal (CVE-2026-39822)

Bug Fix(es) and Enhancement(s):

  • Update Go to version 1.26.5+1 [rhel-8.10.z] (JIRA:Rocky Linux-193478)

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.

Severity
8.2 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "delve",
        "purl": "pkg:rpm/rocky-linux/delve?distro=rocky-linux-8\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:1.26.1-1.module+el8.10.0+40244+e7cb3ff8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "golang",
        "purl": "pkg:rpm/rocky-linux/golang?distro=rocky-linux-8\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:1.26.5-1.module+el8.10.0+40244+e7cb3ff8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": "Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. \n\nSecurity Fix(es):\n\n* golang.org/x/net/idna: golang: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821)\n\n* crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145)\n\n* os: golang: Go os.Root: Symlink following vulnerability allows directory traversal (CVE-2026-39822)\n\nBug Fix(es) and Enhancement(s):\n\n* Update Go to version 1.26.5+1 [rhel-8.10.z] (JIRA:Rocky Linux-193478)\n\nFor 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.",
  "id": "RLSA-2026:38995",
  "modified": "2026-07-27T18:07:44.139239Z",
  "published": "2026-07-15T12:01:08.928069Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:38995"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480756"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484207"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2498152"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: go-toolset:rhel8 security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-27145",
    "CVE-2026-39821",
    "CVE-2026-39822"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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