William Holmes created PDFBOX-6196:
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Summary: PDFBox 3.0.7 MEDIUM CVE-2026-33929
Key: PDFBOX-6196
URL: https://issues.apache.org/jira/browse/PDFBOX-6196
Project: PDFBox
Issue Type: Bug
Affects Versions: 3.0.7 PDFBox
Reporter: William Holmes
*pdfbox-3.0.7.jar*
*CVE-2026-33929*
*Description*
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
vulnerability in Apache PDFBox Examples. This issue affects the
ExtractEmbeddedFiles example in Apache PDFBox: from 2.0.24 through 2.0.36, from
3.0.0 through 3.0.7. Users are recommended to update to version 2.0.37 or 3.0.8
once available. Until then, they should apply the fix provided in GitHub PR
427. The ExtractEmbeddedFiles example contained a path traversal vulnerability
(CWE-22) mentioned in CVE-2026-23907. However the change in the releases 2.0.36
and 3.0.7 is flawed because it doesn't consider the file path separator.
Because of that, a user having writing rights on /home/ABC could be victim to a
malicious PDF resulting in a write attempt to any path starting with /home/ABC,
e.g. "/home/ABCDEF". Users who have copied this example into their production
code should apply the mentioned change. The example has been changed
accordingly and is available in the project repository.
*Origin*
pdfbox-3.0.7.jar
*Risk*
Exploitable
{*}References{*}:
1. [https://github.com/apache/pdfbox]
2. [https://nvd.nist.gov/vuln/detail/CVE-2026-33929]
3. [https://github.com/apache/pdfbox/pull/427/changes]
4. [https://lists.apache.org/thread/j8l07tgzy9dm8d8n0f3c45h7zg7t3ld6]
5. [https://lists.apache.org/thread/op3lyx1ngzy4qycn06l6hljyf28ff0zs]
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