SB20260216153 - Improper Neutralization of Special Elements Used in a Template Engine in LangChain
Published: February 16, 2026
Security Bulletin ID
SB20260216153
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Neutralization of Special Elements Used in a Template Engine (CVE-ID: CVE-2025-65106)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to template injection vulnerability in LangChain's prompt template system. A remote attacker can access Python object internals through template syntax.
Remediation
Install update from vendor's website.