Denial of Service in apostrophe
Summary
GHSA-pv6r-vchh-cxg9: Denial of Service in apostrophe. Affects apostrophe versions < 2.97.1. Fixed in 2.97.1. How to fix ↓
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Background
The apostrophe package is an open-source content management system (CMS) built on top of Node.js. It provides a framework for creating and managing websites, with features such as content editing, user management, and customizable templates. However, versions prior to 2.97.1 are vulnerable to a Denial of Service (DoS) attack.
Vulnerability Detail
The vulnerability in apostrophe lies in the apostrophe-jobs module. This module sets a callback for incoming jobs but fails to clear it regardless of the job's status. As a result, the server accumulates callbacks, allowing an attacker to initiate a large number of jobs and exhaust system memory. This can lead to a complete denial of service, rendering the application unresponsive and impacting its availability.
How To Fix
Latest published version: 4.34.0 as of 23 Oct 2026
npm install apostrophe@4.34.0Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2.97.1
This is the first release that contains the fix.
npm install apostrophe@2.97.1Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The apostrophe package prior to version 2.97.1 is vulnerable to a Denial of Service attack. Upgrading to the latest version is crucial to mitigate this risk and ensure the availability of the application. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for apostrophe →
FAQ
The vulnerability allows an attacker to initiate a large number of jobs, causing the server to accumulate callbacks and exhaust system memory. This can lead to a denial of service, rendering the application unresponsive.
Versions prior to 2.97.1 are affected by this vulnerability.
No, upgrading to version 2.97.1 or later is the recommended solution.
There are no known exploits for this vulnerability at the moment.
You can find more information about this vulnerability in the GitHub Advisory Database: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/09/GHSA-pv6r-vchh-cxg9/GHSA-pv6r-vchh-cxg9.json
References
Related vulnerabilities
Recent vulnerabilities recorded for apostrophe.
