---
id: "CVE-2026-71395"
page: "https://infrastack.ai/live/CVE-2026-71395"
kind: "vulnerability"
aliases: ["CVE-2026-71395"]
title: "Apache FOP: unsafe deserialization when loading hyphenation files"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["apache-fop", "java", "package", "pdf-rendering", "xsl-fo"]
not_affected_if: ["fop-not-used"]
published_at: "2026-11-11T15:17:24+00:00"
first_seen_at: "2026-11-11T15:27:50+00:00"
updated_at: "2026-11-11T15:29:54+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71395", "first_seen_at": "2026-11-11T15:27:50+00:00"}]
exploit_sources: []
---

# Apache FOP: unsafe deserialization when loading hyphenation files

Link for people: https://infrastack.ai/live/CVE-2026-71395 (this .md is for agents)

Apache XML Graphics FOP, a Java tool that turns XSL-FO documents into PDF, deserializes data unsafely while loading hyphenation patterns. The sources do not say what an attacker can run or read as a result.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Look for the `fop` jar or the `org.apache.xmlgraphics:fop` dependency in your build files and note its version
- Check the FOP version your service runs, for example in the Maven or Gradle lock file
- Check whether your application loads custom hyphenation files

## Fix

- Upgrade Apache XML Graphics FOP to `2.12`, which the sources say fixes the issue

## Timeline

- 2026-11-11T15:27:50+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-71395

## From the sources

unsafe deserialization in hyphenation loading vulnerability in Apache XML Graphics FOP.



This issue affects Apache XML Graphics FOP: through 2.11.



Users are recommended to upgrade to version 2.12, which fixes the issue.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_