CVE-2026-118654 (GCVE-0-2026-118654)
Vulnerability from cvelistv5 – Published: 2026-10-28 19:59 – Updated: 2026-10-28 19:59
VLAI
EPSS
VEX
Title
Echo static file middleware route protection bypass via encoded dot-dot traversal
Summary
Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Echo's static file handlers can normalize dot segments after route matching and serve a file through a public static route even though the corresponding direct path is protected by route-level middleware. An unauthenticated attacker can read files that an application intended to protect with route-level middleware, when those files are also reachable through a static filesystem mount after path normalization. This vulnerability is the result of an incomplete fix for CVE-2026-55677. This issue is fixed in 4.16.0 and 5.4.0.
Severity
5.9 (Medium)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/security/advisor… | x_refsource_CONFIRM |
| https://github.com/labstack/echo/commit/b838391e2… | x_refsource_MISC |
| https://github.com/labstack/echo/commit/fc410094b… | x_refsource_MISC |
| https://github.com/labstack/echo/releases/tag/v4.16.0 | x_refsource_MISC |
| https://github.com/labstack/echo/releases/tag/v5.4.0 | x_refsource_MISC |
Impacted products
{
"containers": {
"cna": {
"affected": [
{
"product": "echo",
"vendor": "labstack",
"versions": [
{
"status": "affected",
"version": "\u003c 4.16.0"
},
{
"status": "affected",
"version": "\u003e= 5.0.0, \u003c 5.4.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Echo\u0027s static file handlers can normalize dot segments after route matching and serve a file through a public static route even though the corresponding direct path is protected by route-level middleware. An unauthenticated attacker can read files that an application intended to protect with route-level middleware, when those files are also reachable through a static filesystem mount after path normalization. This vulnerability is the result of an incomplete fix for CVE-2026-55677. This issue is fixed in 4.16.0 and 5.4.0."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-22",
"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-28T19:59:27.911Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/labstack/echo/security/advisories/GHSA-3pmx-cf9f-34xr",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/labstack/echo/security/advisories/GHSA-3pmx-cf9f-34xr"
},
{
"name": "https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1"
},
{
"name": "https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af"
},
{
"name": "https://github.com/labstack/echo/releases/tag/v4.16.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/labstack/echo/releases/tag/v4.16.0"
},
{
"name": "https://github.com/labstack/echo/releases/tag/v5.4.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/labstack/echo/releases/tag/v5.4.0"
}
],
"source": {
"advisory": "GHSA-3pmx-cf9f-34xr",
"discovery": "UNKNOWN"
},
"title": "Echo static file middleware route protection bypass via encoded dot-dot traversal"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-118654",
"datePublished": "2026-10-28T19:59:27.911Z",
"dateReserved": "2026-10-28T17:25:37.561Z",
"dateUpdated": "2026-10-28T19:59:27.911Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-118654",
"date": "2026-11-01",
"epss": "0.00347",
"percentile": "0.28268"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "echo",
"vendor": "labstack",
"versions": [
{
"status": "affected",
"version": "\u003c 4.16.0"
},
{
"status": "affected",
"version": "\u003e= 5.0.0, \u003c 5.4.0"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Echo is a Go web framework. Prior to 4.16.0 and 5.4.0, Echo\u0027s static file handlers can normalize dot segments after route matching and serve a file through a public static route even though the corresponding direct path is protected by route-level middleware. An unauthenticated attacker can read files that an application intended to protect with route-level middleware, when those files are also reachable through a static filesystem mount after path normalization. This vulnerability is the result of an incomplete fix for CVE-2026-55677. This issue is fixed in 4.16.0 and 5.4.0."
}
],
"id": "CVE-2026-118654",
"lastModified": "2026-10-29T15:15:16.507",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "security-advisories@github.com",
"type": "Secondary"
}
]
},
"published": "2026-10-28T20:17:22.550",
"references": [
{
"source": "security-advisories@github.com",
"url": "https://github.com/labstack/echo/commit/b838391e2eade87ae7e5a09d7bb5087bec271ec1"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/labstack/echo/commit/fc410094b2f3415cf2bf5204082137b205bfd5af"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/labstack/echo/releases/tag/v4.16.0"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/labstack/echo/releases/tag/v5.4.0"
},
{
"source": "security-advisories@github.com",
"url": "https://github.com/labstack/echo/security/advisories/GHSA-3pmx-cf9f-34xr"
}
],
"sourceIdentifier": "security-advisories@github.com",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-22"
}
],
"source": "security-advisories@github.com",
"type": "Primary"
}
]
}
}
}
}
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Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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