{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-13723","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","state":"PUBLISHED","assignerShortName":"certcc","dateReserved":"2026-06-29T14:24:39.792Z","datePublished":"2026-07-29T17:25:22.185Z","dateUpdated":"2026-07-29T18:21:44.159Z"},"containers":{"cna":{"title":"Develar's electron-builder allows arbitrary file overwrite","descriptions":[{"lang":"en","value":"A vulnerability in the `zipx.Unzip` extraction routine of Develar's app-builder allows an attacker to overwrite arbitrary files on macOS APFS by exploiting a Unicode Normalization Collision combined with symlink following behavior. APFS treats certain Unicode equivalent filenames as identical (e.g., ß ↔ ss), while app builder performs no canonical normalization before validating or writing paths. As a result, a crafted ZIP archive containing:\r\n•\ta symlink entry named ss pointing to a target file, and\r\n•\ta regular file named ß containing attacker controlled data,\r\nwill cause the second write to follow the symlink and overwrite the target file."}],"source":{"discovery":"UNKNOWN"},"affected":[{"vendor":"Develar","product":"app-builder","versions":[{"status":"affected","version":"0","lessThanOrEqual":"4.2.0","versionType":"custom"}]}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]},{"descriptions":[{"lang":"en","description":"CWE-59 Improper Link Resolution Before File Access ('Link Following')"}]}],"references":[{"url":"https://github.com/develar/app-builder"},{"url":"http://kb.cert.org/vuls/id/293714"},{"url":"https://github.com/develar/app-builder/pull/163"}],"x_generator":{"engine":"VINCE 3.0.43","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-13723"},"providerMetadata":{"orgId":"37e5125f-f79b-445b-8fad-9564f167944b","shortName":"certcc","dateUpdated":"2026-07-29T17:25:22.185Z"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.kb.cert.org/vuls/id/293714"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-07-29T18:20:56.270Z"}},{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-22","lang":"en","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]},{"descriptions":[{"type":"CWE","cweId":"CWE-59","lang":"en","description":"CWE-59 Improper Link Resolution Before File Access ('Link Following')"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T18:21:31.256338Z","id":"CVE-2026-13723","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":"2026-07-29T18:21:44.159Z"}}]}}