org.xwiki.platform:xwiki-platform-office-importer vulnerable to arbitrary server side file writing from account through office converter

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

• CVE-2023-37913: 1.36% estimated exploitation activity in the next 30 days; percentile 71.69 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Triggering the office converter with a specially crafted file name allows writing the attachment's content to an attacker-controlled location on the server as long as the Java process has write access to that location. In particular in the combination with attachment moving, a feature introduced in XWiki 14.0, this is easy to reproduce but it also possible to reproduce in versions as old as XWiki 3.5 by uploading the attachment through the REST API which doesn't remove / or \ from the filename. As the mime type of the attachment doesn't matter for the exploitation, this could e.g., be used to replace the jar-file of an extension which would allow executing arbitrary Java code and thus impact the confidentiality, integrity and availability of the XWiki installation. To reproduce the issue on versions since XWiki 14.0, execute the following steps: 1. Activate the office server 2. Upload an arbitrary file with the extension .doc, e.g., to your user profile (you can use a regular…

Published by the source

25 Oct 2023, 21:08 UTC

Last modified by the source

12 Nov 2023, 05:01 UTC

Source last checked

26 Oct 2026, 16:19 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-vcvr-v426-3m3m

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# Patch Next advisory brief: CVE-2023-37913

Advisory: org.xwiki.platform:xwiki-platform-office-importer vulnerable to arbitrary server side file writing from account through office converter
IDs: CVE-2023-37913, GHSA-vcvr-v426-3m3m
Record: https://patchnext.com/advisories/cve-2023-37913 (revision 1, source checked 26 Oct 2026, 16:19 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.xwiki.platform:xwiki-platform-office-importer 15.3-rc-1, 14.10.8. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.xwiki.platform:xwiki-platform-office-importer: affected >= 3.5-milestone-1, < 14.10.8; >= 15.0-rc-1, < 15.3-rc-1; fixed in 14.10.8, 15.3-rc-1

## Suggested inspection (read-only)
- Maven org.xwiki.platform:xwiki-platform-office-importer: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.xwiki.platform:xwiki-platform-office-importer.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-vcvr-v426-3m3m (GitHub-reviewed advisory GHSA-vcvr-v426-3m3m lists affected ranges: Maven org.xwiki.platform:xwiki-platform-office-importer >=3.5-milestone-1 =15.0-rc-1 <15.3-rc-1)

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