CVE-2026-33467 (GCVE-0-2026-33467)
Vulnerability from cvelistv5 – Published: 2026-04-28 21:15 – Updated: 2026-04-29 15:10
VLAI?
Title
Improper Verification of Cryptographic Signature in Elastic Package Registry Leading to Package Integrity Bypass
Summary
Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.
Severity ?
5.9 (Medium)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Elastic | Elastic Package Registry |
Affected:
0.1.0 , ≤ 1.37.0
(semver)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-33467",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-29T14:54:54.461695Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-29T15:10:02.861Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Elastic Package Registry",
"vendor": "Elastic",
"versions": [
{
"lessThanOrEqual": "1.37.0",
"status": "affected",
"version": "0.1.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cp\u003eImproper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.\u003c/p\u003e"
}
],
"value": "Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed."
}
],
"impacts": [
{
"capecId": "CAPEC-94",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-94 Adversary in the Middle (AiTM)"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-347",
"description": "CWE-347 Improper Verification of Cryptographic Signature",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-28T21:15:24.551Z",
"orgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"shortName": "elastic"
},
"references": [
{
"url": "https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081"
}
],
"source": {
"discovery": "Elastic"
},
"title": "Improper Verification of Cryptographic Signature in Elastic Package Registry Leading to Package Integrity Bypass",
"x_generator": {
"engine": "Elastic CVE Publisher 0.0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "271b6943-45a9-4f3a-ab4e-976f3fa05b5a",
"assignerShortName": "elastic",
"cveId": "CVE-2026-33467",
"datePublished": "2026-04-28T21:15:24.551Z",
"dateReserved": "2026-03-20T10:53:23.100Z",
"dateUpdated": "2026-04-29T15:10:02.861Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-33467",
"date": "2026-05-05",
"epss": "0.00016",
"percentile": "0.0366"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-33467\",\"sourceIdentifier\":\"security@elastic.co\",\"published\":\"2026-04-28T22:16:48.823\",\"lastModified\":\"2026-04-30T15:48:26.580\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@elastic.co\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.2,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security@elastic.co\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-347\"}]}],\"references\":[{\"url\":\"https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081\",\"source\":\"security@elastic.co\"}]}}",
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-33467\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-29T14:54:54.461695Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-29T14:54:58.168Z\"}}], \"cna\": {\"title\": \"Improper Verification of Cryptographic Signature in Elastic Package Registry Leading to Package Integrity Bypass\", \"source\": {\"discovery\": \"Elastic\"}, \"impacts\": [{\"capecId\": \"CAPEC-94\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-94 Adversary in the Middle (AiTM)\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 5.9, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Elastic\", \"product\": \"Elastic Package Registry\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.1.0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.37.0\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081\"}], \"x_generator\": {\"engine\": \"Elastic CVE Publisher 0.0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eImproper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-347\", \"description\": \"CWE-347 Improper Verification of Cryptographic Signature\"}]}], \"providerMetadata\": {\"orgId\": \"271b6943-45a9-4f3a-ab4e-976f3fa05b5a\", \"shortName\": \"elastic\", \"dateUpdated\": \"2026-04-28T21:15:24.551Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-33467\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-29T15:10:02.861Z\", \"dateReserved\": \"2026-03-20T10:53:23.100Z\", \"assignerOrgId\": \"271b6943-45a9-4f3a-ab4e-976f3fa05b5a\", \"datePublished\": \"2026-04-28T21:15:24.551Z\", \"assignerShortName\": \"elastic\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…