Local file disclosure via external XML entities
Published Sep 4, 2025 · Updated Sep 4, 2025
XXE in LangChain Community EverNoteLoader before 0.3.27 allows remote attackers to read local files through crafted Evernote XML. EverNoteLoader._parse_note_xml passes ENEX input to lxml.etree.iterparse without disabling entity resolution or network access, so external DTD entities are expanded into note content. Exploitation requires an application to process an attacker-controlled ENEX file with EverNoteLoader; the demonstrated consequence is disclosure of files readable by that process.
Summary
What happened
XXE in LangChain Community EverNoteLoader before 0.3.27 allows remote attackers to read local files through crafted Evernote XML. EverNoteLoader._parse_note_xml passes ENEX input to lxml.etree.iterparse without disabling entity resolution or network access, so external DTD entities are expanded into note content. Exploitation requires an application to process an attacker-controlled ENEX file with EverNoteLoader; the demonstrated consequence is disclosure of files readable by that process.
The record
- CVE
- CVE-2025-6984
- Published
- Sep 4, 2025
- Updated
- Sep 4, 2025
- Vendor
- LangChain
- Product
- LangChain
- Classifications
- CWE-200, CWE-611, T1005
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 4, 2025CVE publishedPublication date reported by the CVE source.
- Sep 4, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=unspecified <=latest
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- ProjectDiscovery Nuclei CVE-2025-6984 templatefunctional · validated
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Technologies
Your stack
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Your stack
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