Description
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 products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
langchain-ai langchain
< 1.2.22affected
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 ↗
- 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 ↗