CVE-2026-55677

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-55677", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-17T00:05:03.778Z", "datePublished": "2026-06-26T16:15:55.633Z", "dateUpdated": "2026-06-26T16:50:57.019Z"}, "containers": {"cna": {"title": "Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files", "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "lang": "en", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}], "affected": [{"vendor": "labstack", "product": "echo", "versions": [{"version": "< 4.15.3", "status": "affected"}, {"version": ">= 5.0.0, < 5.2.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T16:15:55.633Z"}, "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0."}], "source": {"advisory": "GHSA-vfp3-v2gw-7wfq", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-26T16:50:52.168170Z", "id": "CVE-2026-55677", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T16:50:57.019Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-55677", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-26T16:50:52.168170Z"}}}], "references": [{"url": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T16:50:28.048Z"}}], "cna": {"title": "Echo: Encoded slash (%2F) bypasses route-level protection and exposes static files", "source": {"advisory": "GHSA-vfp3-v2gw-7wfq", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "labstack", "product": "echo", "versions": [{"status": "affected", "version": "< 4.15.3"}, {"status": "affected", "version": ">= 5.0.0, < 5.2.0"}]}], "references": [{"url": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq", "name": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-26T16:15:55.633Z"}}}, "cveMetadata": {"cveId": "CVE-2026-55677", "state": "PUBLISHED", "dateUpdated": "2026-06-26T16:50:57.019Z", "dateReserved": "2026-06-17T00:05:03.778Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-26T16:15:55.633Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "echo", "vendor": "labstack", "versions": [{"status": "affected", "version": "< 4.15.3"}, {"status": "affected", "version": ">= 5.0.0, < 5.2.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Echo is a Go web framework. Prior to 4.15.3 and 5.2.0, Echo's router and static file handler disagree on URL path decoding. The router matches routes using the raw encoded path (preserving %2F as-is), while StaticDirectoryHandler unescapes %2F to / before resolving filesystem paths. This allows an attacker to bypass route-level access controls and read static files without authorization. This vulnerability is fixed in 4.15.3 and 5.2.0."}, {"lang": "es", "value": "Echo es un framework web de Go. Antes de las versiones 4.15.3 y 5.2.0, el router de Echo y el gestor de archivos est\u00e1ticos no concuerdan en la decodificaci\u00f3n de rutas URL. El router empareja rutas utilizando la ruta codificada en bruto (preservando %2F tal cual), mientras que StaticDirectoryHandler desescapa %2F a / antes de resolver las rutas del sistema de archivos. Esto permite a un atacante eludir los controles de acceso a nivel de ruta y leer archivos est\u00e1ticos sin autorizaci\u00f3n. Esta vulnerabilidad est\u00e1 corregida en las versiones 4.15.3 y 5.2.0."}], "id": "CVE-2026-55677", "lastModified": "2026-10-25T17:10:00.197", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55677", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-26T16:50:52.168170Z", "version": "2.0.3"}}]}, "published": "2026-06-26T17:16:34.203", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/labstack/echo/security/advisories/GHSA-vfp3-v2gw-7wfq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.15.3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.2.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "echo", "source": "cna", "vendor": "labstack"}, "product": "echo", "vendor": "labstack"}], "created": "2026-06-26T17:30:05.776184+00:00", "updated": "2026-06-26T23:15:08.549363+00:00", "vendors": ["labstack", "labstack$PRODUCT$echo"]}