---
title: "CVE-2024-55877: XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList"
url: https://erroneo.us/security/cve/CVE-2024-55877/
description: "CVE-2024-55877 (org.xwiki.platform:xwiki-platform-help-ui (Maven)): XWiki Platform is a generic wiki platform. Starting in version 9.7-rc-1 and prior to…"
type: vulnerability-record
section: "Security Digest"
date_published: 2024-12-12
date_modified: 2025-04-30
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-55877"
kev: false
cvss: 10
epss: 0.01603
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-55877: XWiki allows remote code execution from account through macro descriptions and XWiki.XWikiSyntaxMacrosList

**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 1.6% , percentile 76: FIRST’s model estimates a 1.6% chance of exploitation activity in the next 30 days, higher than 76% 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-help-ui (Maven) >= 9.7-rc-1, < 15.10.11, fixed in 15.10.11 ; org.xwiki.platform:xwiki-platform-help-ui (Maven) >= 16.0.0-rc-1, < 16.4.1, fixed in 16.4.1 ; org.xwiki.platform:xwiki-platform-help-ui (Maven) >= 16.5.0-rc-1, < 16.5.0, fixed in 16.5.0 . Check your lockfile, including transitive dependencies.

## What it is

XWiki Platform is a generic wiki platform. Starting in version 9.7-rc-1 and prior to versions 15.10.11, 16.4.1, and 16.5.0, any user with an account can perform arbitrary remote code execution by adding instances of XWiki.WikiMacroClass to any page. This compromises the confidentiality, integrity and availability of the whole XWiki installation. This vulnerability has been fixed in XWiki 15.10.11, 16.4.1 and 16.5.0. It is possible to manually apply the patch to the page XWiki.XWikiSyntaxMacrosList as a workaround.

## Affected packages

- Maven `org.xwiki.platform:xwiki-platform-help-ui` >= 9.7-rc-1, < 15.10.11 → fixed: 15.10.11
- Maven `org.xwiki.platform:xwiki-platform-help-ui` >= 16.0.0-rc-1, < 16.4.1 → fixed: 16.4.1
- Maven `org.xwiki.platform:xwiki-platform-help-ui` >= 16.5.0-rc-1, < 16.5.0 → fixed: 16.5.0

## Affected products (CVE record)

- xwiki xwiki-platform: >= 9.7-rc-1, < 15.10.11, >= 16.0.0-rc-1, < 16.4.1, >= 16.5.0-rc-1, < 16.5.0

## 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): 1.60% probability of exploitation activity in the next 30 days; percentile 76.

## Sources

- [GitHub Advisory GHSA-2r87-74cx-2p7c](https://github.com/advisories/GHSA-2r87-74cx-2p7c)
- [CVE.org record CVE-2024-55877](https://www.cve.org/CVERecord?id=CVE-2024-55877)
- [NVD entry CVE-2024-55877](https://nvd.nist.gov/vuln/detail/CVE-2024-55877)
- [github.com](https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-2r87-74cx-2p7c)
- [github.com](https://github.com/xwiki/xwiki-platform/commit/40e1afe001d61eafdf13f3621b4b597a0e58a3e3)
- [jira.xwiki.org](https://jira.xwiki.org/browse/XWIKI-22030)

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Source page: https://erroneo.us/security/cve/CVE-2024-55877/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt