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vuln-cve/data/2026/100xxx/CVE-2026-100669.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-100669",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"state": "PUBLISHED",
"assignerShortName": "VulnCheck",
"dateReserved": "2026-09-26T02:34:55.635Z",
"datePublished": "2026-09-26T13:23:34.082Z",
"dateUpdated": "2026-09-30T20:11:12.856Z"
},
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck",
"dateUpdated": "2026-09-26T13:23:34.082Z"
},
"datePublic": "2026-09-09T00:00:00.000Z",
"title": "Grav before 2.0.25 Sensitive File Disclosure via Case-Variation Bypass",
"descriptions": [
{
"lang": "en",
"value": "Grav before 2.0.25 ships web server configuration samples whose access-control deny rules are matched case-sensitively. In webserver-configs/web.config (IIS), every deny rule (user_sensitive_folders, user_accounts, user_data, user_error_redirect, user_pages, system, vendor, ignore_folders) sets ignoreCase=\"false\" on its URL Rewrite <match> element, overriding the IIS default of ignoreCase=\"true\"; because these are rewrite matches rather than <requestFiltering> elements, there is no case-insensitive fallback. On IIS running over case-insensitive NTFS, an unauthenticated remote attacker can vary the case of a folder name or file extension (for example GET /user/CONFIG/system.YAML) so that no deny rule matches and the IIS static file handler resolves and returns the underlying file, disclosing sensitive data such as configuration secrets or account password hashes. Whether a bypassed file is actually returned depends on MIME registration: .json is served by default, while .yaml/.yml return HTTP 404.3 on a stock IIS unless a YAML MIME mapping has been added. The same class of gap exists in the bundled webserver-configs/lighttpd.conf, whose user/(config|env), directory, script-extension, root-file and dotfile rules lack the (?i) modifier, though it is lower risk because lighttpd typically runs on case-sensitive filesystems. Deployments served by Apache (.htaccess), nginx, Caddy, or the PHP built-in server are not affected. The issue is fixed in 2.0.25; because the .htaccess installer heal does not touch web.config or lighttpd.conf, operators must re-copy the corrected sample files after upgrading."
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"description": "Improper Handling of Case Sensitivity",
"cweId": "CWE-178",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "getgrav",
"product": "grav",
"defaultStatus": "unaffected",
"versions": [
{
"version": "0",
"status": "affected",
"versionType": "semver",
"lessThan": "2.0.25"
},
{
"version": "2.0.25",
"status": "unaffected",
"versionType": "semver"
}
]
}
],
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"nodes": [
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"operator": "OR",
"negate": false,
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"vulnerable": true,
"criteria": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.0.25"
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{
"format": "CVSS",
"cvssV4_0": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"baseScore": 8.7,
"baseSeverity": "HIGH"
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"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE",
"baseScore": 7.5,
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"references": [
{
"url": "https://github.com/getgrav/grav/security/advisories/GHSA-pg8v-xw58-frq8",
"tags": [
"vendor-advisory"
],
"name": "GitHub Security Advisory (GHSA-pg8v-xw58-frq8)"
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{
"name": "VulnCheck Advisory: Grav before 2.0.25 Sensitive File Disclosure via Case-Variation Bypass",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/grav-before-2.0.25-sensitive-file-disclosure-via-case-variation-bypass"
}
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"credits": [
{
"lang": "en",
"value": "movon-ava",
"type": "reporter"
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"type": "ssvc",
"content": {
"id": "CVE-2026-100669",
"role": "CISA Coordinator",
"options": [
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{
"Automatable": "yes"
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"Technical Impact": "partial"
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"version": "2.0.3",
"timestamp": "2026-09-30T18:44:31.966178Z"
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"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-30T20:11:12.856Z"
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}
}