{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-21620", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-01-01T03:46:45.934Z", "datePublished": "2026-02-20T10:57:08.620Z", "dateUpdated": "2026-02-20T10:57:08.620Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["tftp_file"], "packageName": "erlang/otp", "packageURL": "pkg:github/erlang/otp", "product": "otp", "programFiles": ["lib/tftp/src/tftp_file.erl"], "repo": "https://github.com/erlang/otp", "vendor": "erlang", "versions": [{"changes": [{"at": "26.2.5.17", "status": "unaffected"}, {"at": "27.3.4.8", "status": "unaffected"}, {"at": "28.3.2", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "17.0", "versionType": "otp"}, {"changes": [{"at": "655fb95725ba2fb811740b57e106873833824344", "status": "unaffected"}, {"at": "3970738f687325138eb75f798054fa8960ac354e", "status": "unaffected"}, {"at": "696fdec922661d4a3cc528fc34bc24fae8d4ad8a", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "07b8f441ca711f9812fad9e9115bab3c3aa92f79", "versionType": "git"}]}, {"defaultStatus": "unaffected", "modules": ["tftp_file"], "packageName": "inets", "packageURL": "pkg:otp/inets?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git", "product": "otp", "programFiles": ["src/tftp_file.erl"], "repo": "https://github.com/erlang/otp", "vendor": "erlang", "versions": [{"lessThan": "pkg:otp/inets@7.0", "status": "affected", "version": "pkg:otp/inets@5.10", "versionType": "purl"}, {"lessThan": "7.0", "status": "affected", "version": "5.10", "versionType": "otp"}]}, {"defaultStatus": "unaffected", "modules": ["tftp_file"], "packageName": "tftp", "packageURL": "pkg:otp/tftp?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git", "product": "otp", "programFiles": ["src/tftp_file.erl"], "repo": "https://github.com/erlang/otp", "vendor": "erlang", "versions": [{"changes": [{"at": "pkg:otp/tftp@1.1.1.1", "status": "unaffected"}, {"at": "pkg:otp/tftp@1.2.2.1", "status": "unaffected"}, {"at": "pkg:otp/tftp@1.2.4", "status": "unaffected"}], "lessThan": "pkg:otp/tftp@*", "status": "affected", "version": "pkg:otp/tftp@1.0", "versionType": "purl"}, {"changes": [{"at": "1.1.1.1", "status": "unaffected"}, {"at": "1.2.2.1", "status": "unaffected"}, {"at": "1.2.4", "status": "unaffected"}], "lessThan": "*", "status": "affected", "version": "1.0", "versionType": "otp"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.2.5.17", "vulnerable": true}, {"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*", "versionEndExcluding": "27.3.4.8", "versionStartIncluding": "27.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*", "versionEndExcluding": "28.3.2", "versionStartIncluding": "28.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "reporter", "value": "Luigino Camastra"}, {"lang": "en", "type": "remediation reviewer", "value": "Jakub Witczak"}, {"lang": "en", "type": "remediation developer", "value": "Raimo Niskanen"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal.<p> This vulnerability is associated with program files <tt>lib/tftp/src/tftp_file.erl</tt>, <tt>src/tftp_file.Erl</tt>.</p><p>This issue affects otp: from 17.0, from 07b8f441ca711f9812fad9e9115bab3c3aa92f79; otp: from 5.10 before 7.0; otp: from 1.0.</p>"}], "value": "Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. 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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Relative Path Traversal, Improper Isolation or Compartmentalization vulnerability in erlang otp erlang/otp (tftp_file modules), erlang otp inets (tftp_file modules), erlang otp tftp (tftp_file modules) allows Relative Path Traversal. This vulnerability is associated with program files lib/tftp/src/tftp_file.erl, src/tftp_file.Erl.\n\nThis issue affects otp: from 17.0, from 07b8f441ca711f9812fad9e9115bab3c3aa92f79; otp: from 5.10 before 7.0; otp: from 1.0."}], "id": "CVE-2026-21620", "lastModified": "2026-02-20T11:15:56.783", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.3, "baseSeverity": "LOW", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/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": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}, "published": "2026-02-20T11:15:56.783", "references": [{"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/erlang/otp/commit/3970738f687325138eb75f798054fa8960ac354e"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/erlang/otp/commit/655fb95725ba2fb811740b57e106873833824344"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/erlang/otp/commit/696fdec922661d4a3cc528fc34bc24fae8d4ad8a"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/erlang/otp/pull/10706"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://github.com/erlang/otp/security/advisories/GHSA-hmrc-prh3-rpvp"}, {"source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-23"}], "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "type": "Secondary"}]}

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