Vulnerability from cleanstart
Published
2026-09-08 01:16
Modified
2026-09-07 06:49
Summary
ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label
Details
Multiple security vulnerabilities affect the istio package. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details.
Severity
9.8 (Critical)
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "istio"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1.29.6-r2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the istio 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-LK25174",
"modified": "2026-09-07T06:49:07Z",
"published": "2026-09-08T01:16:17.892966Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-LK25174.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2025-15558"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-25680"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-25681"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-27136"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-27145"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-33186"
},
{
"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-2026-35469"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39817"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-39819"
},
{
"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-2026-39824"
},
{
"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-2026-40179"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42151"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42154"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42499"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42501"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42502"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42504"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42506"
},
{
"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-2026-44903"
},
{
"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-2026-56852"
},
{
"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/ghsa-259r-337f-4rfw"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-8rm2-7qqf-34qm"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-fw8g-cg8f-9j28"
},
{
"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-p436-gjf2-799p"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-p77j-4mvh-x3m3"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-vffh-x6r8-xx99"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-wg65-39gg-5wfj"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-15558"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25680"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25681"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27136"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27145"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33186"
},
{
"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-2026-35469"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39817"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39819"
},
{
"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-2026-39824"
},
{
"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-2026-40179"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42151"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42154"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42499"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42501"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42502"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42506"
},
{
"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-2026-44903"
},
{
"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-2026-56852"
},
{
"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"
}
],
"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-2025-15558",
"CVE-2026-25680",
"CVE-2026-25681",
"CVE-2026-27136",
"CVE-2026-27145",
"CVE-2026-33186",
"CVE-2026-33811",
"CVE-2026-33814",
"CVE-2026-33818",
"CVE-2026-35469",
"CVE-2026-39817",
"CVE-2026-39819",
"CVE-2026-39820",
"CVE-2026-39821",
"CVE-2026-39823",
"CVE-2026-39824",
"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-2026-40179",
"CVE-2026-42151",
"CVE-2026-42154",
"CVE-2026-42499",
"CVE-2026-42501",
"CVE-2026-42502",
"CVE-2026-42504",
"CVE-2026-42506",
"CVE-2026-42507",
"CVE-2026-42508",
"CVE-2026-44903",
"CVE-2026-46595",
"CVE-2026-46597",
"CVE-2026-46598",
"CVE-2026-46600",
"CVE-2026-56852",
"CVE-2026-56853",
"CVE-2026-56858",
"CVE-2026-56859",
"CVE-2026-56860",
"CVE-2026-56862",
"ghsa-259r-337f-4rfw",
"ghsa-8rm2-7qqf-34qm",
"ghsa-fw8g-cg8f-9j28",
"ghsa-gcjh-h69q-9w9g",
"ghsa-hrxh-6v49-42gf",
"ghsa-p436-gjf2-799p",
"ghsa-p77j-4mvh-x3m3",
"ghsa-vffh-x6r8-xx99",
"ghsa-wg65-39gg-5wfj"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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