{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23939","assignerOrgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","state":"PUBLISHED","assignerShortName":"EEF","dateReserved":"2026-01-19T14:23:14.343Z","datePublished":"2026-02-26T19:41:18.762Z","dateUpdated":"2026-04-07T14:38:03.183Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://github.com","cpes":["cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","modules":["'Elixir.Hexpm.Store.Local'"],"packageName":"hexpm/hexpm","packageURL":"pkg:github/hexpm/hexpm","product":"hexpm","programFiles":["lib/hexpm/store/local.ex"],"programRoutines":[{"name":"'Elixir.Hexpm.Store.Local':get/3"},{"name":"'Elixir.Hexpm.Store.Local':put/4"},{"name":"'Elixir.Hexpm.Store.Local':delete/2"},{"name":"'Elixir.Hexpm.Store.Local':delete_many/2"}],"repo":"https://github.com/hexpm/hexpm.git","vendor":"hexpm","versions":[{"lessThan":"5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0","status":"affected","version":"931ee0ed46fa89218e0400a4f6e6d15f96406050","versionType":"git"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Only self-hosted hexpm deployments using the <tt>Hexpm.Store.Local</tt> storage backend are affected. The hex.pm service and deployments using S3-compatible object storage backends are not affected."}],"value":"Only self-hosted hexpm deployments using the Hexpm.Store.Local storage backend are affected. The hex.pm service and deployments using S3-compatible object storage backends are not affected."}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:hexpm:hexpm:*:*:*:*:*:*:*:*","versionEndExcluding":"5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0","versionStartIncluding":"931ee0ed46fa89218e0400a4f6e6d15f96406050","vulnerable":true}],"negate":false,"operator":"AND"}],"operator":"AND"}],"credits":[{"lang":"en","type":"finder","value":"Michael Lubas / Paraxial.io"},{"lang":"en","type":"remediation developer","value":"Jonatan Männchen / EEF"},{"lang":"en","type":"remediation reviewer","value":"Eric Meadows-Jönsson / Hex.pm"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Store.Local' module) allows Relative Path Traversal.<p>This vulnerability is associated with program files <tt>lib/hexpm/store/local.ex</tt> and program routines <tt>'Elixir.Hexpm.Store.Local':get/3</tt>, <tt>'Elixir.Hexpm.Store.Local':put/4</tt>, <tt>'Elixir.Hexpm.Store.Local':delete/2</tt>, <tt>'Elixir.Hexpm.Store.Local':delete_many/2</tt>.</p><p>This issue does NOT affect hex.pm the service. Only self-hosted deployments using the Local Storage backend are affected.</p><p>This issue affects hexpm: from 931ee0ed46fa89218e0400a4f6e6d15f96406050 before 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0.</p>"}],"value":"Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Store.Local' module) allows Relative Path Traversal. This vulnerability is associated with program files lib/hexpm/store/local.ex and program routines 'Elixir.Hexpm.Store.Local':get/3, 'Elixir.Hexpm.Store.Local':put/4, 'Elixir.Hexpm.Store.Local':delete/2, 'Elixir.Hexpm.Store.Local':delete_many/2.\n\nThis issue does NOT affect hex.pm the service. Only self-hosted deployments using the Local Storage backend are affected.\n\nThis issue affects hexpm: from 931ee0ed46fa89218e0400a4f6e6d15f96406050 before 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0."}],"impacts":[{"capecId":"CAPEC-139","descriptions":[{"lang":"en","value":"CAPEC-139 Relative Path Traversal"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","exploitMaturity":"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:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"6b3ad84c-e1a6-4bf7-a703-f496b71e49db","shortName":"EEF","dateUpdated":"2026-04-07T14:38:03.183Z"},"references":[{"tags":["vendor-advisory","related"],"url":"https://github.com/hexpm/hexpm/security/advisories/GHSA-42mv-r64p-4869"},{"tags":["related"],"url":"https://cna.erlef.org/cves/CVE-2026-23939.html"},{"tags":["related"],"url":"https://osv.dev/vulnerability/EEF-CVE-2026-23939"},{"tags":["patch"],"url":"https://github.com/hexpm/hexpm/commit/5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0"}],"source":{"discovery":"INTERNAL"},"title":"Path Traversal in Local File Store Backend","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<ul><li>Avoid the local file store backend in any exposed environment.</li><li>Restrict network access to the registry when using the local backend.</li><li>Production deployments should use object storage (e.g., S3-compatible backends) instead of the local filesystem store.</li></ul>"}],"value":"* Avoid the local file store backend in any exposed environment.\n* Restrict network access to the registry when using the local backend.\n* Production deployments should use object storage (e.g., S3-compatible backends) instead of the local filesystem store."}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-26T20:24:13.786958Z","id":"CVE-2026-23939","options":[{"Exploitation":"none"},{"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":"2026-02-26T20:24:24.772Z"}}]}}