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https://issues.apache.org/jira/browse/PDFBOX-6180?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tilman Hausherr updated PDFBOX-6180:
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Description:
Kaixuan Li showed a flaw in the commit for CVE-2026-23907 and a solution.
The flaw is that if we have writing rights on {{/home/Jona}} then the software
could create a malicious PDF that extracts to any users that start with
{{/home/Jon}} e.g. {{/home/Jonathan}} (if we'd have writing rights there).
was:Kaixuan Li showed a flaw in the commit for CVE-2026-23907 and a solution.
> Improve directory boundary check in ExtractEmbeddedFiles example
> ----------------------------------------------------------------
>
> Key: PDFBOX-6180
> URL: https://issues.apache.org/jira/browse/PDFBOX-6180
> Project: PDFBox
> Issue Type: Improvement
> Components: Utilities
> Affects Versions: 2.0.36, 3.0.7 PDFBox
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Priority: Major
> Fix For: 2.0.37, 3.0.8 PDFBox, 4.0.0
>
>
> Kaixuan Li showed a flaw in the commit for CVE-2026-23907 and a solution.
> The flaw is that if we have writing rights on {{/home/Jona}} then the
> software could create a malicious PDF that extracts to any users that start
> with {{/home/Jon}} e.g. {{/home/Jonathan}} (if we'd have writing rights
> there).
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