Description (CNA)
LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchain_core.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to load_prompt() or load_prompt_from_config(), an attacker can read arbitrary files on the host filesystem, constrained only by file-extension checks (.txt for templates, .json/.yaml for examples). This issue has been patched in version 1.2.22.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| langchain-ai / langchain | affected < 1.2.22 |
CWE
CWE-22
References
- https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54
- https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c
- https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22
ADP enrichment
No English description supplied.
A flaw was found in LangChain. Multiple functions in `langchain_core.prompts.loading` read files from paths embedded in deserialized configuration dictionaries without validation for directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to `load_prompt()` or `load_prompt_from_config()`, an attacker can read arbitrary files on the host filesystem.
- https://access.redhat.com/security/cve/CVE-2026-34070
- https://bugzilla.redhat.com/show_bug.cgi?id=2453287
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json
- https://access.redhat.com/errata/RHSA-2026:24766
- https://access.redhat.com/errata/RHSA-2026:59159
- https://access.redhat.com/errata/RHSA-2026:37275