File disclosure via unrestricted Saxon URL access
Published Nov 28, 2025 · Updated Jan 27, 2026
XXE in Iteras Peppol-py before 1.1.1 allows remote authenticated users to disclose local files through crafted invoice XML. The validate_peppol_document function creates a PySaxonProcessor without restricting allowedProtocols, so external DTD entities dereference file and HTTP URLs during invoice validation. An application must pass attacker-controlled invoice XML into validation; exploitation reads files available to the process and sends their contents to a remote host.
Summary
What happened
XXE in Iteras Peppol-py before 1.1.1 allows remote authenticated users to disclose local files through crafted invoice XML. The validate_peppol_document function creates a PySaxonProcessor without restricting allowedProtocols, so external DTD entities dereference file and HTTP URLs during invoice validation. An application must pass attacker-controlled invoice XML into validation; exploitation reads files available to the process and sends their contents to a remote host.
The record
- CVE
- CVE-2025-66371
- Published
- Nov 28, 2025
- Updated
- Jan 27, 2026
- Vendor
- Iteras
- Product
- Peppol-py
- Classifications
- CWE-611
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 28, 2025CVE publishedPublication date reported by the CVE source.
- Jan 27, 2026Record updatedLatest update available in the CVE record.
Exploitability
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Is a vulnerable build present?
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- Affected versionversion=0 <1.1.1
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What is affected?
Published CVSS scores
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Attacks
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