vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-44829

Gotenberg: Path traversal in zip entry name via Windows-style separators in upload filename

HIGH
8.8
CVSS Score
Published: August 19, 2026 at 02:35 PM UTC
Updated: September 9, 2026 at 09:27 PM UTC
1 product affected across 1 vendorGotenberg

Using gotenberg by gotenberg?

Get instant alerts when new vulnerabilities affect gotenberg - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gotenberg· Gotenberggo
60%
v < 8.33.0
Affected range stops below 8.33.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_CONFIRM
Source: cverecord
https://github.com/gotenberg/gotenberg/security/advisories/GHSA-hwc4-gmrw-5222
x_refsource_MISC
Source: cverecord
https://github.com/gotenberg/gotenberg/issues/662
x_refsource_MISC
Source: cverecord
https://github.com/gotenberg/gotenberg/commit/93d0103585372433e18b351bb16edf4c383932d3
x_refsource_MISC
Source: cverecord
https://github.com/gotenberg/gotenberg/releases/tag/v8.33.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card