{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-28807", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-03-03T14:40:00.590Z", "datePublished": "2026-03-10T21:34:47.859Z", "dateUpdated": "2026-03-10T21:34:47.859Z"}, "containers": {"cna": {"affected": [{"cpes": ["cpe:2.3:a:gleam-wisp:wisp:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "packageName": "wisp", "packageURL": "pkg:hex/wisp", "product": "wisp", "repo": "https://github.com/gleam-wisp/wisp", "vendor": "gleam-wisp", "versions": [{"lessThan": "2.2.1", "status": "affected", "version": "2.1.1", "versionType": "semver"}, {"lessThan": "pkg:hex/wisp@2.2.1", "status": "affected", "version": "pkg:hex/wisp@2.1.1", "versionType": "purl"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:gleam-wisp:wisp:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "packageName": "gleam-wisp/wisp", "packageURL": "pkg:github/gleam-wisp/wisp", "product": "wisp", "repo": "https://github.com/gleam-wisp/wisp.git", "vendor": "gleam-wisp", "versions": [{"lessThan": "161118c431047f7ef1ff7cabfcc38981877fdd93", "status": "affected", "version": "129dcb1fe10ab1e676145d91477535e1c90ab550", "versionType": "git"}, {"lessThan": "pkg:github/gleam-wisp/wisp@161118c431047f7ef1ff7cabfcc38981877fdd93", "status": "affected", "version": "pkg:github/gleam-wisp/wisp@129dcb1fe10ab1e676145d91477535e1c90ab550", "versionType": "purl"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gleam-wisp:wisp:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.2.1", "versionStartIncluding": "2.1.1", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "John Downey"}, {"lang": "en", "type": "remediation developer", "value": "Louis Pilfold"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in gleam-wisp wisp allows arbitrary file read via percent-encoded path traversal.<p>The <tt>wisp.serve_static</tt> function is vulnerable to path traversal because sanitization runs before percent-decoding. The encoded sequence <tt>%2e%2e</tt> passes through <tt>string.replace</tt> unchanged, then <tt>uri.percent_decode</tt> converts it to <tt>..</tt>, which the OS resolves as directory traversal when the file is read.</p><p>An unauthenticated attacker can read any file readable by the application process in a single HTTP request, including application source code, configuration files, secrets, and system files.</p><p>This issue affects wisp: from 2.1.1 before 2.2.1.</p>"}], "value": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in gleam-wisp wisp allows arbitrary file read via percent-encoded path traversal.\n\nThe wisp.serve_static function is vulnerable to path traversal because sanitization runs before percent-decoding. 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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in gleam-wisp wisp allows arbitrary file read via percent-encoded path traversal.\n\nThe wisp.serve_static function is vulnerable to path traversal because sanitization runs before percent-decoding. The encoded sequence %2e%2e passes through string.replace unchanged, then uri.percent_decode converts it to .., which the OS resolves as directory traversal when the file is read.\n\nAn unauthenticated attacker can read any file readable by the application process in a single HTTP request, including application source code, configuration files, secrets, and system files.\n\nThis issue affects wisp: from 2.1.1 before 2.2.1."}], "id": "CVE-2026-28807", "lastModified": "2026-03-10T22:16:18.640", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}, "published": "2026-03-10T22:16:18.640", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/gleam-wisp/wisp/commit/161118c431047f7ef1ff7cabfcc38981877fdd93"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/gleam-wisp/wisp/security/advisories/GHSA-h7cj-j2vv-qw8r"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

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