CVE-2026-71395: Apache XML Graphics FOP unsafe deserialization in hyphenation loading

CVE-2026-71395 · Severity: info · Published 2026-11-11

Apache FOP is an open-source tool for converting XML documents to PDF and other formats. An unsafe deserialization vulnerability in its hyphenation loading feature could allow attackers to execute arbitrary code by providing a malicious hyphenation file. Organizations using FOP to process untrusted XML documents are at risk of code execution and data compromise.

Vendors: Apache.

Quick answers

Is CVE-2026-71395 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-71395 being exploited in the wild.
How severe is CVE-2026-71395?
Informational severity, published 11 November 2026.
Which products and versions are affected?
Apache XML Graphics FOP through 2.11.
Is there a fix for CVE-2026-71395?
Yes: fixed in Apache XML Graphics FOP 2.12. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-71395 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-71395?
Check whether you run Apache XML Graphics FOP at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: Apache XML Graphics FOP 2.12

Technical details

The vulnerability exists in FOP's HyphenationTree class, which deserializes hyphenation data using ObjectInputStream without proper class whitelisting. An attacker can supply a malicious serialized object in a hyphenation file to achieve remote code execution if the application processes untrusted input. A fix is available in FOP 2.12.

Affected products

  • Apache XML Graphics FOP through 2.11

Timeline

  • 2026-11-11: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.