{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-110628", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-10-14T13:07:29.410Z", "datePublished": "2026-10-14T14:17:03.232Z", "dateUpdated": "2026-10-14T14:17:03.232Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-14T14:17:03.232Z"}, "datePublic": "2026-09-05T00:00:00.000Z", "title": "Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment", "descriptions": [{"lang": "en", "value": "Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Server-Side Request Forgery (SSRF)", "cweId": "CWE-918", "type": "CWE"}]}], "affected": [{"vendor": "kanbn", "product": "kan", "defaultStatus": "unaffected", "versions": [{"version": "0.5.5", "lessThanOrEqual": "0.6.0", "status": "affected", "versionType": "semver"}], "collectionURL": "https://github.com", "packageURL": "pkg:github/kanbn/kan", "repo": "https://github.com/kanbn/kan"}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:kan:kan:*:*:*:*:*:*:*:*", "versionStartIncluding": "0.5.5", "versionEndIncluding": "0.6.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.2, "baseSeverity": "CRITICAL"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH"}}], "references": [{"url": "https://hackmd.io/@leediay/HyIxU63ofg", "tags": ["third-party-advisory"]}, {"url": "https://github.com/kanbn/kan/pull/590", "tags": ["issue-tracking", "patch"], "name": "Open PR describing the S3_ENDPOINT-unset bypass"}, {"url": "https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52", "tags": ["technical-description"], "name": "allowlist conditional on S3_ENDPOINT, unconditional fetch(url)"}, {"url": "https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27", "tags": ["technical-description"], "name": "S3_ENDPOINT documented as blank for AWS S3"}, {"url": "https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg", "tags": ["vendor-advisory"], "name": "GitHub Security Advisory (GHSA-qrx8-9hc6-jvqg)"}, {"url": "https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7", "tags": ["patch"], "name": "Incomplete fix for CVE-2026-32255"}, {"url": "https://github.com/kanbn/kan", "tags": ["product"]}, {"name": "VulnCheck Advisory: Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment"}], "credits": [{"lang": "en", "value": "leediay153 from Viettel Post", "type": "finder"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://github.com", "defaultStatus": "unaffected", "packageURL": "pkg:github/kanbn/kan", "product": "kan", "repo": "https://github.com/kanbn/kan", "vendor": "kanbn", "versions": [{"lessThanOrEqual": "0.6.0", "status": "affected", "version": "0.5.5", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata."}], "id": "CVE-2026-110628", "lastModified": "2026-10-14T15:17:15.653", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "[email protected]", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.2, "baseSeverity": "CRITICAL", "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": "HIGH", "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:H/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": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-14T15:17:15.540", "references": [{"source": "[email protected]", "url": "https://github.com/kanbn/kan"}, {"source": "[email protected]", "url": "https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27"}, {"source": "[email protected]", "url": "https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52"}, {"source": "[email protected]", "url": "https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7"}, {"source": "[email protected]", "url": "https://github.com/kanbn/kan/pull/590"}, {"source": "[email protected]", "url": "https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg"}, {"source": "[email protected]", "url": "https://hackmd.io/@leediay/HyIxU63ofg"}, {"source": "[email protected]", "url": "https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "[email protected]", "type": "Primary"}]}

{}

{}