PyPI/langchain-core CVE-2026-34070: high 7.5, EPSS 1.21%
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
Action: Upgrade langchain-core to 1.2.22 or later.
pip install langchain-core==1.2.22Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.2.22 | - |
Fixed versions
| 1.2.22 |
Sources
- osv: PYSEC-2026-2193
- https://access.redhat.com/security/cve/CVE-2026-34070
- 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-2026:37275
- https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22
- https://bugzilla.redhat.com/show_bug.cgi?id=2453287
- https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151130ba0d47c
- https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff54
CVE-2026-34070 · published · modified · JSON