CVEvulnerability
CVE-2026-34070
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-03-31
- Last modified
- 2026-08-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-22
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 configurations
• langchain langchain core (< 1.2.22)
Related
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c Patch
- https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22 Release Notes
- https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54 Exploit, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:24766 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:37275 access.redhat.com
- https://access.redhat.com/errata/RHSA-2026:59159 access.redhat.com
- https://access.redhat.com/security/cve/CVE-2026-34070 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2453287 bugzilla.redhat.com
- https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54 Exploit, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34070.json security.access.redhat.com