CVE-2025-6984
High
Description
The langchain-ai/langchain project, specifically the EverNoteLoader component, is vulnerable to XML External Entity (XXE) attacks due to insecure XML parsing. The affected version is 0.3.63. The vulnerability arises from the use of etree.iterparse() without disabling external entity references, which can lead to sensitive information disclosure. An attacker could exploit this by crafting a malicious XML payload that references local files, potentially exposing sensitive data such as /etc/passwd.
SeverityHigh
CVSS7.5
Exploit probability—
ProductLangchain-community
PublishedSep 4, 2025
First seenSep 4, 2025
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- langchain-community0.3.27 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| langchain-communityPyPI | v < 0.3.27 | 0.3.27 |
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