{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77151", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-20T13:57:41.826Z", "datePublished": "2026-08-20T19:45:10.732Z", "dateUpdated": "2026-08-20T19:45:10.732Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-20T19:45:10.732Z"}, "title": "lin-snow Ech0 crypto.go MD5Encrypt risky encryption", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-327", "lang": "en", "description": "Risky Cryptographic Algorithm"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-310", "lang": "en", "description": "Cryptographic Issues"}]}], "affected": [{"vendor": "lin-snow", "product": "Ech0", "versions": [{"version": "5.4.0", "status": "affected"}, {"version": "5.4.1", "status": "affected"}, {"version": "5.4.2", "status": "unaffected"}], "cpes": ["cpe:2.3:a:lin-snow:ech0:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in lin-snow Ech0 up to 5.4.1. Affected by this issue is the function MD5Encrypt of the file internal/util/crypto/crypto.go. Performing a manipulation results in risky cryptographic algorithm. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 5.4.2 can resolve this issue. The patch is named 9ce19a3b0d0765086a655f45d3a706ec1810404f. It is recommended to upgrade the affected component."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.3, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 3.7, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C", "baseSeverity": "LOW"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 3.7, "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C", "baseSeverity": "LOW"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 2.6, "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N/E:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-08-20T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-20T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-20T16:03:16.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "summmm (VulDB User)", "type": "reporter"}], "references": [{"url": "https://vuldb.com/vuln/393736", "name": "VDB-393736 | lin-snow Ech0 crypto.go MD5Encrypt risky encryption", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/393736/cti", "name": "VDB-393736 | CTI Indicators (IOB, IOC, TTP, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-77151", "name": "CVE-2026-77151 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/881015", "name": "Submit #881015 | lin-snow Ech0 5.4.1 Unsalted MD5 Password Hashing in Ech0 Enables Mass Credential Cr", "tags": ["third-party-advisory"]}, {"url": "https://github.com/lin-snow/Ech0/issues/314", "tags": ["issue-tracking"]}, {"url": "https://github.com/lin-snow/Ech0/pull/315", "tags": ["issue-tracking", "patch"]}, {"url": "https://github.com/lin-snow/Ech0/commit/9ce19a3b0d0765086a655f45d3a706ec1810404f", "tags": ["patch"]}, {"url": "https://github.com/lin-snow/Ech0/releases/tag/ech0-5.4.2", "tags": ["patch"]}, {"url": "https://github.com/lin-snow/Ech0/", "tags": ["product"]}], "tags": ["x_open-source"], "x_generator": ["VulDB PVTS v202608"]}}}

{}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:lin-snow:ech0:*:*:*:*:*:*:*:*"], "product": "Ech0", "vendor": "lin-snow", "versions": [{"status": "affected", "version": "5.4.0"}, {"status": "affected", "version": "5.4.1"}, {"status": "unaffected", "version": "5.4.2"}]}], "source": "cna@vuldb.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in lin-snow Ech0 up to 5.4.1. Affected by this issue is the function MD5Encrypt of the file internal/util/crypto/crypto.go. Performing a manipulation results in risky cryptographic algorithm. Remote exploitation of the attack is possible. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 5.4.2 can resolve this issue. The patch is named 9ce19a3b0d0765086a655f45d3a706ec1810404f. It is recommended to upgrade the affected component."}], "id": "CVE-2026-77151", "lastModified": "2026-08-20T20:17:47.253", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:H/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 4.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "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:H/AT:N/PR:N/UI:N/VC:L/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": "LOW", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}]}, "published": "2026-08-20T20:17:47.253", "references": [{"source": "cna@vuldb.com", "url": "https://github.com/lin-snow/Ech0/"}, {"source": "cna@vuldb.com", "url": "https://github.com/lin-snow/Ech0/commit/9ce19a3b0d0765086a655f45d3a706ec1810404f"}, {"source": "cna@vuldb.com", "url": "https://github.com/lin-snow/Ech0/issues/314"}, {"source": "cna@vuldb.com", "url": "https://github.com/lin-snow/Ech0/pull/315"}, {"source": "cna@vuldb.com", "url": "https://github.com/lin-snow/Ech0/releases/tag/ech0-5.4.2"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/cve/CVE-2026-77151"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/submit/881015"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/393736"}, {"source": "cna@vuldb.com", "url": "https://vuldb.com/vuln/393736/cti"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-310"}, {"lang": "en", "value": "CWE-327"}], "source": "cna@vuldb.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.4.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "5.4.1"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "5.4.2"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Ech0", "source": "cna", "vendor": "lin-snow"}, "product": "ech0", "vendor": "lin-snow"}], "created": "2026-08-20T22:00:05.597534+00:00", "updated": "2026-08-20T22:00:05.597575+00:00", "vendors": ["lin-snow", "lin-snow$PRODUCT$ech0"]}