thunderbird: Fix of 3 CVEs

{
  "id": "b11e39d05b326ea536a7b56596171e12de2c3d05a7aa59365c3fd61ce4d4d115",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1783517292",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "thunderbird: Fix of 3 CVEs",
    "summary": "- CVE-2026-2770: keep construction depth for custom elements in sync; wrap AutoConstructionDepth in mozilla::Maybe so early throws in HTMLConstructor still tear it down deterministically (Bug 2014585) - CVE-2026-2763: use-after-free in SuppressDeletedProperty during property iteration; replace GetPrototype + GetPropertyDescriptor (both CanGC/re-entrant) with staticPrototype() + LookupPropertyPure() + GetPropertyAttributes() in js/src/vm/Iteration.cpp (Bug 2012018) - CVE-2026-2764: JIT baseline CacheIR call-scripted stub could observe a not-yet-created `this` if it OOM'd between reservation and construction; create `this` after pushing arguments and thread the argument through pushArguments/CreateThis paths (Bug 2012608)",
    "evidence": "osv:CLSA-2026-1783517292",
    "products": [
      {
        "name": {
          "value": "thunderbird",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "115.4.1-1.el9_2.alma.tuxcare.els18",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1783517292",
      "aliases": [
        "CLSA-2026-1783517292"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "115.4.1-1.el9_2.alma.tuxcare.els18"
                }
              ]
            }
          ],
          "package": {
            "name": "thunderbird",
            "purl": "pkg:rpm/tuxcare/thunderbird?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-2026-1783517292.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:14.768887271Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-2763",
        "CVE-2026-2764",
        "CVE-2026-2770"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1783517292.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-2763",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-2764",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-2770"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-2763",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-2764",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-2770",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 449780,
  "published_at": "2026-07-08T13:28:31+00:00"
}