# CVE-2026-44829: Gotenberg path traversal via Windows-style separators in ZIP entry names

Source: https://junglewise.ai/threats/cve-2026-44829-gotenberg-path-traversal-via-windows-style-separators-in-zip  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-19. Updated: 2026-05-29  
License: CC BY 4.0 with a link back

CVE-2026-44829 · Severity: high · CVSS 8.8 · Published 2026-08-19

Gotenberg, a tool for converting and manipulating documents, is vulnerable to a path traversal flaw when generating ZIP files. An attacker can provide a specially crafted filename that, when processed and returned in a ZIP archive, can cause files to be written to unintended locations on a Windows user's computer during extraction. This could lead to the overwriting of sensitive system files or the placement of malicious software if a user extracts the resulting archive.

Technologies: [github.com/gotenberg/gotenberg/v7 (Go)](https://junglewise.ai/threats/technologies/github-com-gotenberg-gotenberg-v7), [github.com/gotenberg/gotenberg/v8 (Go)](https://junglewise.ai/threats/technologies/github-com-gotenberg-gotenberg-v8), [Gotenberg](https://junglewise.ai/threats/technologies/gotenberg). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Gotenberg](https://junglewise.ai/threats/vendors/gotenberg).

## Quick answers

**Is CVE-2026-44829 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-44829 being exploited in the wild.

**How severe is CVE-2026-44829?** High severity, with a CVSS score of 8.8, published 19 August 2026.

**Which products and versions are affected?** github.com/gotenberg/gotenberg/v7 (Go) SEMVER:introduced=0; github.com/gotenberg/gotenberg/v8 (Go) <= 8.32.0, SEMVER:introduced=0,fixed=8.33.0; Gotenberg <= 8.32.0.

**Is there a fix for CVE-2026-44829?** Yes. github.com/gotenberg/gotenberg/v8 (Go): upgrade to 8.33.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-44829 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-44829?** Check whether you run github.com/gotenberg/gotenberg/v7 (Go), github.com/gotenberg/gotenberg/v8 (Go) or Gotenberg at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/gotenberg/gotenberg/v8 (Go): upgrade to 8.33.0 or later

  ```sh
  go get github.com/gotenberg/gotenberg/v8@v8.33.0
  ```


## Technical details

A path traversal vulnerability exists in Gotenberg due to improper sanitization of multipart filenames containing Windows-style backslash ('\') separators. Because Gotenberg typically runs in Linux containers, 'filepath.Base' fails to strip backslashes, allowing them to persist in the internal 'diskToOriginal' map. When Gotenberg generates a ZIP archive for multi-output routes (such as /split or /convert), these backslashes are included in the ZIP entry names. When a Windows user extracts this ZIP using standard tools (Windows Explorer, 7-Zip, WinRAR), the backslashes are interpreted as path separators, allowing files to be written outside the intended extraction directory. The vulnerability is patched in version 8.33.0.

## Affected products

- Gotenberg Gotenberg <= 8.32.0

## Identifiers

- CVE-2026-44829
- GHSA-hwc4-gmrw-5222
- GO-2026-5443

## Timeline

- 2026-05-29: advisory: GHSA-hwc4-gmrw-5222 published
- 2026-05-29: patched: Version 8.33.0 released

## References

- [https://api.github.com/users/Curly-Haired-Baboon](https://api.github.com/users/Curly-Haired-Baboon)
- [https://github.com/Curly-Haired-Baboon](https://github.com/Curly-Haired-Baboon)
- [https://api.github.com/users/Curly-Haired-Baboon/gists%7B/gist_id%7D](https://api.github.com/users/Curly-Haired-Baboon/gists%7B/gist_id%7D)
- [https://api.github.com/users/Curly-Haired-Baboon/repos](https://api.github.com/users/Curly-Haired-Baboon/repos)
- [https://avatars.githubusercontent.com/u/227850795?v=4](https://avatars.githubusercontent.com/u/227850795?v=4)
- [https://api.github.com/users/Curly-Haired-Baboon/events%7B/privacy%7D](https://api.github.com/users/Curly-Haired-Baboon/events%7B/privacy%7D)

## Related threats

- [Gotenberg server-side request forgery in IsPublicIP IPv6 handling](https://junglewise.ai/threats/cve-2026-126799-gotenberg-8-31-0-before-8-38-0-contains-a-server-side-request)
- [Gotenberg race condition in multipart downloadFrom handling](https://junglewise.ai/threats/cve-2026-45742-gotenberg-race-condition-in-multipart-downloadfrom-handling)
- [Gotenberg SSRF deny-list bypass in IsPublicIP via IPv6 prefixes](https://junglewise.ai/threats/cve-2026-45741-gotenberg-ssrf-deny-list-bypass-in-ispublicip-via-ipv6-prefixes)
- [Gotenberg SSRF and local file disclosure in LibreOffice conversion](https://junglewise.ai/threats/cve-2026-55229-gotenberg-ssrf-and-local-file-disclosure-in-libreoffice)
- [GO-2026-5587 - Gotenberg has incomplete fix for ExifTool arbitrary file write: case-insensitive bypass and missing…](https://junglewise.ai/threats/go-2026-5587-gotenberg-has-incomplete-fix-for-exiftool-arbitrary-file-5b46f3f0)