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UnratedFix available

ignition: Fix of 6 CVEs

Type: advisorySources: OSV

- CVE-2026-39821: reject xn-- labels that decode to an all-ASCII label in idna ToASCII/ToUnicode, preventing hostname authorization bypass - CVE-2026-33818: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which enforces a recursion limit in encoding/asn1 Unmarshal - CVE-2026-56858: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which fixes the html/template JavaScript context tracking XSS - CVE-2026-56859: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which adds a recursion depth guard in encoding/xml decoding - CVE-2026-56860: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which avoids quadratic complexity in net/url path resolution - CVE-2026-56862: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which stops counting post-handshake crypto/tls KeyUpdate messages as state-advancing

Products
ignition, ignition-edge, ignition-validate
Affected versions
Not specified
Fixed versions
2.15.0-2.el9_2.tuxcare.els1
CVEs
CVE-2026-33818, CVE-2026-39821, CVE-2026-56858, CVE-2026-56859, CVE-2026-56860, CVE-2026-56862
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 11:45 UTC · Revision 1

Source evidence

ignition: Fix of 6 CVEs

core-osv · Original source

Published 16 Sept 2026, 14:47 UTC

- CVE-2026-39821: reject xn-- labels that decode to an all-ASCII label in idna ToASCII/ToUnicode, preventing hostname authorization bypass - CVE-2026-33818: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which enforces a recursion limit in encoding/asn1 Unmarshal - CVE-2026-56858: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which fixes the html/template JavaScript context tracking XSS - CVE-2026-56859: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which adds a recursion depth guard in encoding/xml decoding - CVE-2026-56860: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which avoids quadratic complexity in net/url path resolution - CVE-2026-56862: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which stops counting post-handshake crypto/tls KeyUpdate messages as state-advancing

osv:CLSA-2026-1789570040

ignition

Fixed versions: 2.15.0-2.el9_2.tuxcare.els1

ignition-edge

Fixed versions: 2.15.0-2.el9_2.tuxcare.els1

ignition-validate

Fixed versions: 2.15.0-2.el9_2.tuxcare.els1

Complete source record
{
  "id": "99731249c23752236a2c3c1d2521f57d3500858a22ab1150115df14e474c71d9",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1789570040",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ignition: Fix of 6 CVEs",
    "summary": "- CVE-2026-39821: reject xn-- labels that decode to an all-ASCII label in idna ToASCII/ToUnicode, preventing hostname authorization bypass - CVE-2026-33818: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which enforces a recursion limit in encoding/asn1 Unmarshal - CVE-2026-56858: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which fixes the html/template JavaScript context tracking XSS - CVE-2026-56859: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which adds a recursion depth guard in encoding/xml decoding - CVE-2026-56860: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which avoids quadratic complexity in net/url path resolution - CVE-2026-56862: rebuilt against golang >= 1.22.9-1.tuxcare.els26 which stops counting post-handshake crypto/tls KeyUpdate messages as state-advancing",
    "evidence": "osv:CLSA-2026-1789570040",
    "products": [
      {
        "name": {
          "value": "ignition",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.15.0-2.el9_2.tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ignition-edge",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.15.0-2.el9_2.tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ignition-validate",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.15.0-2.el9_2.tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1789570040",
      "aliases": [
        "CLSA-2026-1789570040"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.15.0-2.el9_2.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ignition",
            "purl": "pkg:rpm/tuxcare/ignition?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789570040.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.15.0-2.el9_2.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ignition-edge",
            "purl": "pkg:rpm/tuxcare/ignition-edge?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789570040.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.15.0-2.el9_2.tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ignition-validate",
            "purl": "pkg:rpm/tuxcare/ignition-validate?distro=almalinux-9.2",
            "ecosystem": "TuxCare:AlmaLinux:9.2"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1789570040.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:10.046033259Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-33818",
        "CVE-2026-39821",
        "CVE-2026-56858",
        "CVE-2026-56859",
        "CVE-2026-56860",
        "CVE-2026-56862"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1789570040.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33818",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-39821",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56858",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56859",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56860",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-56862"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-33818",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-39821",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56858",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56859",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56860",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-56862",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449733,
  "published_at": "2026-09-16T14:47:34+00:00"
}