148 lines
6.8 KiB
JSON
148 lines
6.8 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-84428",
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"assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
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"state": "PUBLISHED",
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"assignerShortName": "openjs",
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"dateReserved": "2026-09-01T18:21:51.906Z",
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"datePublished": "2026-09-04T10:24:27.809Z",
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"dateUpdated": "2026-09-04T16:06:04.123Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
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"shortName": "openjs",
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"dateUpdated": "2026-09-04T10:24:27.809Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "fastify versions before 5.12.2 implement the case-insensitive nature of HTTP header names by lowercasing names in a route's header schema before compiling it, but the transformation is incomplete: it lowercases the properties keys and the root-level required array, and does not lowercase the trigger and dependent names inside the JSON Schema Draft 7 dependencies keyword. Because Node stores request header names in lowercase, a canonical-case dependency such as requiring an authentication header whenever a privileged-mode header is present never matches, and the presence assertion is silently skipped. An unauthenticated remote client can therefore send the header that activates a privileged branch while omitting the header the dependency was meant to require, bypassing the conditional check. Users should upgrade to fastify 5.12.2 or later.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "fastify versions before 5.12.2 implement the case-insensitive nature of HTTP header names by lowercasing names in a route's header schema before compiling it, but the transformation is incomplete: it lowercases the properties keys and the root-level required array, and does not lowercase the trigger and dependent names inside the JSON Schema Draft 7 dependencies keyword. Because Node stores request header names in lowercase, a canonical-case dependency such as requiring an authentication header whenever a privileged-mode header is present never matches, and the presence assertion is silently skipped. An unauthenticated remote client can therefore send the header that activates a privileged branch while omitting the header the dependency was meant to require, bypassing the conditional check. Users should upgrade to fastify 5.12.2 or later."
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "fastify",
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"product": "fastify",
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"defaultStatus": "unaffected",
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"versions": [
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{
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"versionType": "semver",
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"status": "affected",
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"version": "0",
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"lessThan": "5.12.2"
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},
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{
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"versionType": "semver",
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"status": "unaffected",
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"version": "5.12.2"
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}
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],
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"packageURL": "pkg:npm/fastify"
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}
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],
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"references": [
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{
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"url": "https://github.com/fastify/fastify/security/advisories/GHSA-9q9j-q6p8-xq58"
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},
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{
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"url": "https://cna.openjsf.org/security-advisories.html"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "reporter",
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"value": "schecthellraiser606"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "mcollina"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "UlisesGascon"
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}
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],
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"title": "fastify vulnerable to header validation bypass via incomplete schema case normalization",
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"metrics": [
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-178",
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"lang": "en",
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"description": "CWE-178: Improper Handling of Case Sensitivity",
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"type": "CWE"
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}
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]
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}
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],
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"x_generator": {
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"engine": "cve-kit 1.0.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-04T16:04:59.730612Z",
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"id": "CVE-2026-84428",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-04T16:06:04.123Z"
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}
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}
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]
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}
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} |