RLSA-2026:69308 (CVE-2026-33818)

Vulnerability from osv_rocky – Published: 2026-09-22 12:08 – Updated: 2026-10-02 06:12 – Source website
VLAI
Summary
Important: yggdrasil security update
Details

yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child "worker" process, exchanging data with its worker processes through a D-Bus message broker.

Security Fix(es):

  • mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504)

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

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

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

  • encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)

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

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:10",
        "name": "yggdrasil",
        "purl": "pkg:rpm/rocky-linux/yggdrasil?distro=rocky-linux-10\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:0.4.9.2-1.el10_2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:69308"
  },
  "details": "yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child \"worker\" process, exchanging data with its worker processes through a D-Bus message broker.\n\nSecurity Fix(es):\n\n* mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504)\n\n* encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)\n\n* net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)\n\n* crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)\n\n* encoding/xml: golang: Go: Denial of Service via XML decoding recursion depth issue (CVE-2026-56859)\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-2026:69308",
  "modified": "2026-10-02T06:12:26.135155Z",
  "published": "2026-09-22T12:08:07.529031Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:69308"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484204"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515815"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515820"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515839"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2515840"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:69308"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: yggdrasil security update",
  "upstream": [
    "CVE-2026-33818",
    "CVE-2026-42504",
    "CVE-2026-56859",
    "CVE-2026-56860",
    "CVE-2026-56862"
  ]
}



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