{"id":"CVE-2026-44829","sourceIdentifier":"security-advisories@github.com","published":"2026-08-19T15:17:02.630","lastModified":"2026-09-09T21:13:25.910","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"Gotenberg is a Docker-powered stateless API for PDF files. In 8.32.0 and earlier, filename handling in pkg/modules/api/context.go uses filepath.Base on Linux, which does not treat backslashes as path separators, so a multipart filename containing Windows-style parent directory components survives sanitization. The original filename flows through ctx.diskToOriginal and the multi-output PDF routes into archives.FilesFromDisk and archives.Zip.Archive as the generated zip entry name. A remote attacker can submit a name such as ........\\Windows\\System32\\evil.pdf through an upload or an upstream downloadFrom Content-Disposition header, and a Windows archive extractor can write the resulting file outside the intended extraction directory. The affected paths include /forms/pdfengines/split and other multi-output PDF, LibreOffice, and conversion routes, and exploitation can cause arbitrary file writes on a downstream Windows system when a user or process extracts the returned archive. This issue is fixed in version 8.33.0."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"gotenberg","product":"gotenberg","versions":[{"version":"< 8.33.0","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:L","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":5.3}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-19T18:03:43.071414Z","id":"CVE-2026-44829","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-22"}]}],"references":[{"url":"https://github.com/gotenberg/gotenberg/commit/93d0103585372433e18b351bb16edf4c383932d3","source":"security-advisories@github.com"},{"url":"https://github.com/gotenberg/gotenberg/issues/662","source":"security-advisories@github.com"},{"url":"https://github.com/gotenberg/gotenberg/releases/tag/v8.33.0","source":"security-advisories@github.com"},{"url":"https://github.com/gotenberg/gotenberg/security/advisories/GHSA-hwc4-gmrw-5222","source":"security-advisories@github.com"}]}