Vulnerability Database · PyPI · langchain-core · Version
langchain-core 1.2.9
1.2.9 is affected by 8 vulnerabilities.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to.
Critical 0 High 4 Medium 1 Low 2 Unrated 1
-
Released 05 Feb 2026
Licence MIT
Also known from other sources 8
Newer releases 300
Database updated 23/Oct/2026
Release and licence data published by PyPI. Licence information is not legal advice.
Concerned about your application's security?
Vulert continues monitoring your dependencies and alerts you when new vulnerabilities are disclosed. No installation and no source-code access required.
01 Vulnerabilities affecting this version
langchain-core 1.2.9 vulnerabilities
8 vulnerabilities cover langchain-core 1.2.9. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| CVE-2026-44843: LangChain Unsafe Deserialization Vulnerability | 8.2 high | 0.3.85 | 13 Jul 2026 |
| CVE-2026-44843: LangChain Vulnerable to Unsafe Deserialization of Attacker-Controlled Objects | 8.2 high | 1.3.3 | 08 May 2026 |
| CVE-2026-34070: langchain-core Arbitrary File Read Vulnerability | 7.5 high | 1.2.22 | 31 Mar 2026 |
| CVE-2026-34070: Path Traversal Vulnerability in langchain-core Package | 7.5 high | 1.2.22 | 27 Mar 2026 |
| CVE-2026-40087: LangChain Incomplete f-string Validation in Prompt Templates | 5.3 medium | 0.3.84 | 13 Jul 2026 |
| CVE-2026-26013: LangChain SSRF Vulnerability in ChatOpenAI Token Counting | 3.7 low | 1.2.11 | 13 Jul 2026 |
| CVE-2026-26013: LangChain SSRF Vulnerability in ChatOpenAI Image Token Counting | 3.7 low | 1.2.11 | 11 Feb 2026 |
| CVE-2026-34070: langchain-core Package Vulnerability Leading to Potential Security Risks | N/A unrated | 1.2.21+echo.1 | 16 Apr 2026 |
Looking for another version, or everything Vulert holds for langchain-core?
Questions
About langchain-core 1.2.9
Is langchain-core 1.2.9 vulnerable?
Yes. 8 vulnerabilities in the Vulert database cover langchain-core 1.2.9: 0 critical, 4 high, 1 medium and 2 low, plus 1 not yet rated. Each entry above names the fixed version to move to.
Is 1.2.9 the latest release of langchain-core?
No. 1.2.9 was published 05 Feb 2026, and newer releases exist. Newer is not automatically safer — the version table on the package page shows what each release carries.
How do I monitor langchain-core for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the langchain-core version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.