CVE-2025-6984 PoC — Sensitive Information Disclosure Due to Insecure XML Parsing in langchain-ai/langchain

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/code/cves/2025/CVE-2025-6984.yaml

Associated Vulnerability

Title:Sensitive Information Disclosure Due to Insecure XML Parsing in langchain-ai/langchain (CVE-2025-6984)
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.

Description

langchain-ai/langchain 0.3.63 contains an XML External Entity (XXE) injection caused by insecure XML parsing in EverNoteLoader using etree.iterparse(), letting attackers disclose sensitive information, exploit requires crafted malicious XML payload.

File Snapshot


 id: CVE-2025-6984

info:
  name: langchain-ai langchain - XML External Entity Injection
  author: nu

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