GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration
Vulnerability from cleanstart
Published
2026-09-10 02:14
Modified
2026-09-09 05:03
Summary
ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label
Details

Multiple security vulnerabilities affect the calico package. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details.

References
https://github.com/cleanstart-dev/cleanstart-secu… ADVISORY
https://osv.dev/vulnerability/CVE-2026-27145 WEB
https://osv.dev/vulnerability/CVE-2026-29181 WEB
https://osv.dev/vulnerability/CVE-2026-32280 WEB
https://osv.dev/vulnerability/CVE-2026-32281 WEB
https://osv.dev/vulnerability/CVE-2026-32282 WEB
https://osv.dev/vulnerability/CVE-2026-32283 WEB
https://osv.dev/vulnerability/CVE-2026-32288 WEB
https://osv.dev/vulnerability/CVE-2026-32289 WEB
https://osv.dev/vulnerability/CVE-2026-33186 WEB
https://osv.dev/vulnerability/CVE-2026-33810 WEB
https://osv.dev/vulnerability/CVE-2026-33811 WEB
https://osv.dev/vulnerability/CVE-2026-33814 WEB
https://osv.dev/vulnerability/CVE-2026-33818 WEB
https://osv.dev/vulnerability/CVE-2026-39820 WEB
https://osv.dev/vulnerability/CVE-2026-39821 WEB
https://osv.dev/vulnerability/CVE-2026-39823 WEB
https://osv.dev/vulnerability/CVE-2026-39825 WEB
https://osv.dev/vulnerability/CVE-2026-39826 WEB
https://osv.dev/vulnerability/CVE-2026-39827 WEB
https://osv.dev/vulnerability/CVE-2026-39828 WEB
https://osv.dev/vulnerability/CVE-2026-39829 WEB
https://osv.dev/vulnerability/CVE-2026-39830 WEB
https://osv.dev/vulnerability/CVE-2026-39831 WEB
https://osv.dev/vulnerability/CVE-2026-39832 WEB
https://osv.dev/vulnerability/CVE-2026-39833 WEB
https://osv.dev/vulnerability/CVE-2026-39834 WEB
https://osv.dev/vulnerability/CVE-2026-39835 WEB
https://osv.dev/vulnerability/CVE-2026-39836 WEB
https://osv.dev/vulnerability/CVE-2026-39883 WEB
https://osv.dev/vulnerability/CVE-2026-41178 WEB
https://osv.dev/vulnerability/CVE-2026-42499 WEB
https://osv.dev/vulnerability/CVE-2026-42504 WEB
https://osv.dev/vulnerability/CVE-2026-42507 WEB
https://osv.dev/vulnerability/CVE-2026-42508 WEB
https://osv.dev/vulnerability/CVE-2026-46595 WEB
https://osv.dev/vulnerability/CVE-2026-46597 WEB
https://osv.dev/vulnerability/CVE-2026-46598 WEB
https://osv.dev/vulnerability/CVE-2026-46600 WEB
https://osv.dev/vulnerability/CVE-2026-56853 WEB
https://osv.dev/vulnerability/CVE-2026-56858 WEB
https://osv.dev/vulnerability/CVE-2026-56859 WEB
https://osv.dev/vulnerability/CVE-2026-56860 WEB
https://osv.dev/vulnerability/CVE-2026-56862 WEB
https://osv.dev/vulnerability/CVE-2026-73500 WEB
https://osv.dev/vulnerability/ghsa-259r-337f-4rfw WEB
https://osv.dev/vulnerability/ghsa-gcjh-h69q-9w9g WEB
https://osv.dev/vulnerability/ghsa-hrxh-6v49-42gf WEB
https://osv.dev/vulnerability/ghsa-p77j-4mvh-x3m3 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-27145 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-29181 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-32280 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-32281 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-32282 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-32283 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-32288 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-32289 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-33186 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-33810 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-33811 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-33814 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-33818 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39820 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39821 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39823 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39825 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39826 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39827 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39828 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39829 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39830 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39831 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39832 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39833 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39834 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39835 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39836 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-39883 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-41178 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-42499 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-42504 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-42507 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-42508 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-46595 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-46597 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-46598 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-46600 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-56853 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-56858 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-56859 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-56860 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-56862 WEB
https://nvd.nist.gov/vuln/detail/CVE-2026-73500 WEB

{
  "affected": [
    {
      "package": {
        "ecosystem": "CleanStart",
        "name": "calico"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.30.7-r7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [],
  "database_specific": {},
  "details": "Multiple security vulnerabilities affect the calico package. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details.",
  "id": "CLEANSTART-2026-YS01797",
  "modified": "2026-09-09T05:03:48Z",
  "published": "2026-09-10T02:14:45.873622Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-YS01797.json"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-27145"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-29181"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-32280"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-32281"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-32282"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-32283"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-32288"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-32289"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-33186"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-33810"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-33811"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-33814"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-33818"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39820"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39821"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39823"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39825"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39826"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39827"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39828"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39829"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39830"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39831"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39832"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39833"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39834"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39835"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39836"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-39883"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-41178"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-42499"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-42504"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-42507"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-42508"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-46595"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-46597"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-46598"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-46600"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-56853"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-56858"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-56859"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-56860"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-56862"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/CVE-2026-73500"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/ghsa-259r-337f-4rfw"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/ghsa-gcjh-h69q-9w9g"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/ghsa-hrxh-6v49-42gf"
    },
    {
      "type": "WEB",
      "url": "https://osv.dev/vulnerability/ghsa-p77j-4mvh-x3m3"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27145"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-29181"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32280"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32281"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32282"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32283"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32288"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32289"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33186"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33810"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33811"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33814"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33818"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39820"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39821"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39823"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39825"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39826"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39827"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39828"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39829"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39830"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39831"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39832"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39833"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39834"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39835"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39836"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39883"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41178"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42499"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42507"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42508"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46595"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46597"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46598"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46600"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56853"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56858"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56859"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56860"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-56862"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73500"
    }
  ],
  "related": [],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label",
  "upstream": [
    "CVE-2026-27145",
    "CVE-2026-29181",
    "CVE-2026-32280",
    "CVE-2026-32281",
    "CVE-2026-32282",
    "CVE-2026-32283",
    "CVE-2026-32288",
    "CVE-2026-32289",
    "CVE-2026-33186",
    "CVE-2026-33810",
    "CVE-2026-33811",
    "CVE-2026-33814",
    "CVE-2026-33818",
    "CVE-2026-39820",
    "CVE-2026-39821",
    "CVE-2026-39823",
    "CVE-2026-39825",
    "CVE-2026-39826",
    "CVE-2026-39827",
    "CVE-2026-39828",
    "CVE-2026-39829",
    "CVE-2026-39830",
    "CVE-2026-39831",
    "CVE-2026-39832",
    "CVE-2026-39833",
    "CVE-2026-39834",
    "CVE-2026-39835",
    "CVE-2026-39836",
    "CVE-2026-39883",
    "CVE-2026-41178",
    "CVE-2026-42499",
    "CVE-2026-42504",
    "CVE-2026-42507",
    "CVE-2026-42508",
    "CVE-2026-46595",
    "CVE-2026-46597",
    "CVE-2026-46598",
    "CVE-2026-46600",
    "CVE-2026-56853",
    "CVE-2026-56858",
    "CVE-2026-56859",
    "CVE-2026-56860",
    "CVE-2026-56862",
    "CVE-2026-73500",
    "ghsa-259r-337f-4rfw",
    "ghsa-gcjh-h69q-9w9g",
    "ghsa-hrxh-6v49-42gf",
    "ghsa-p77j-4mvh-x3m3"
  ]
}



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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.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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