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vuln-cve/data/2026/53xxx/CVE-2026-53779.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-53779",
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"state": "PUBLISHED",
"assignerShortName": "VulnCheck",
"dateReserved": "2026-06-10T20:14:32.826Z",
"datePublished": "2026-06-22T18:22:40.698Z",
"dateUpdated": "2026-11-08T14:05:04.860Z"
},
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"cna": {
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"dateUpdated": "2026-11-08T14:05:04.860Z"
},
"datePublic": "2026-06-03T00:00:00.000Z",
"title": "WebP Server Go < 0.15.0 Path Traversal via Backslash Encoding on Windows",
"descriptions": [
{
"lang": "en",
"value": "WebP Server Go through 0.14.4 contains a path traversal vulnerability on Windows that allows unauthenticated attackers to read files outside the configured IMG_PATH directory by sending requests with percent-encoded backslashes (%5C) that bypass the path.Clean() sanitization in handler/router.go. Attackers can exploit the discrepancy between Go's forward-slash-only path normalization and Windows file system APIs that treat backslashes and forward slashes as equivalent to access arbitrary files on the host filesystem accessible to the server process."
}
],
"tags": [
"x_open-source"
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"cweId": "CWE-22",
"description": "Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
"type": "CWE"
}
]
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{
"defaultStatus": "affected",
"packageURL": "pkg:github/webp-sh/webp_server_go",
"vendor": "webp-sh",
"product": "webp_server_go",
"repo": "https://github.com/webp-sh/webp_server_go",
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{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThan": "0.15.0"
}
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}
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"cpeApplicability": [
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"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"subIntegrityImpact": "NONE",
"vulnAvailabilityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "HIGH",
"baseScore": 8.7,
"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"
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"scope": "UNCHANGED",
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"references": [
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"url": "https://github.com/webp-sh/webp_server_go/pull/451",
"name": "Pull Request",
"tags": [
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{
"url": "https://github.com/webp-sh/webp_server_go/commit/eb3b5f9289b331cb639cd610b0d1c532d2cc24e0",
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"patch"
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},
{
"url": "https://www.vulncheck.com/advisories/webp-server-go-path-traversal-via-backslash-encoding-on-windows",
"tags": [
"third-party-advisory"
]
}
],
"credits": [
{
"lang": "en",
"value": "Katriel Moses",
"type": "finder"
}
],
"source": {
"discovery": "UNKNOWN"
},
"x_generator": {
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}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-23T14:12:03.904360Z",
"id": "CVE-2026-53779",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
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],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-06-23T14:12:33.417Z"
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}