---
title: "CVE-2023-37913: org.xwiki.platform:xwiki-platform-office-importer vulnerable to arbitrary server side file writing from account through office converter"
url: https://erroneo.us/security/cve/CVE-2023-37913/
description: "CVE-2023-37913 (org.xwiki.platform:xwiki-platform-office-importer (Maven)): XWiki Platform is a generic wiki platform offering runtime services for…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-10-25
date_modified: 2024-09-12
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-37913"
kev: false
cvss: 10
epss: 0.01076
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-37913: org.xwiki.platform:xwiki-platform-office-importer vulnerable to arbitrary server side file writing from account through office converter

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 1.1% , percentile 65: FIRST’s model estimates a 1.1% chance of exploitation activity in the next 30 days, higher than 65% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes org.xwiki.platform:xwiki-platform-office-importer (Maven) >= 3.5-milestone-1, < 14.10.8, fixed in 14.10.8 ; org.xwiki.platform:xwiki-platform-office-importer (Maven) >= 15.0-rc-1, < 15.3-rc-1, fixed in 15.3-rc-1 . Check your lockfile, including transitive dependencies.

## What it is

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 3.5-milestone-1 and prior to versions 14.10.8 and 15.3-rc-1, 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. This vulnerability has been patched in XWiki 14.10.8 and 15.3RC1. There are no known workarounds apart from disabling the office converter.

## Affected packages

- Maven `org.xwiki.platform:xwiki-platform-office-importer` >= 3.5-milestone-1, < 14.10.8 → fixed: 14.10.8
- Maven `org.xwiki.platform:xwiki-platform-office-importer` >= 15.0-rc-1, < 15.3-rc-1 → fixed: 15.3-rc-1

## Affected products (CVE record)

- xwiki xwiki-platform: >= 3.5-milestone-1, < 14.10.8, >= 15.0-rc-1, < 15.3-rc-1

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.08% probability of exploitation activity in the next 30 days; percentile 65.

## Sources

- [GitHub Advisory GHSA-vcvr-v426-3m3m](https://github.com/advisories/GHSA-vcvr-v426-3m3m)
- [CVE.org record CVE-2023-37913](https://www.cve.org/CVERecord?id=CVE-2023-37913)
- [NVD entry CVE-2023-37913](https://nvd.nist.gov/vuln/detail/CVE-2023-37913)
- [github.com](https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-vcvr-v426-3m3m)
- [github.com](https://github.com/xwiki/xwiki-platform/commit/45d182a4141ff22f3ff289cf71e4669bdc714544)
- [jira.xwiki.org](https://jira.xwiki.org/browse/XWIKI-20715)

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Source page: https://erroneo.us/security/cve/CVE-2023-37913/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt