CVE-2026-27966: Langflow Remote Code Execution in CSV Agent
Langflow, LangChain
Langflow hardcodes dangerous code execution in its CSV Agent node, enabling remote code execution via prompt injection. Users are advised to upgrade to patched versions.
disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why
- CVSS
- 9.8
- EPSS
- 0.35 · top 2% · 2026-11-13
- fix status
- Fix status unknown
- first report
- 26 Feb 2026
- last update
- 27 Feb 2026
- CVE ids
Timeline · 2
Sources · 2
Advisories and databases
- 2026-02-26CVE-2026-27966: Langflow is a tool for building and deploying AI-powered agents and workflows.NVD · nvd.nist.gov/vuln/detail/CVE-2026-27966
- 2026-02-27CVE-2026-27966: Langflow has Remote Code Execution in CSV AgentGitHub Advisory Database · github.com/advisories/GHSA-3645-fxcv-hqr4
Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.
Classification
- lane
- Patch now
- AI role
- Attack on AI
- categories
- Prompt injectionAgent hijackInfrastructure vulnerability
- severity
- 2 · Disclosed vulnerability
- fix status
- Fix status unknown
- targets
- Framework / tooling
- dates
- happened 27 Feb 2026 · first reported 26 Feb 2026
- origin
- GitHub Advisory DatabaseVulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
- record
- confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z
Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned
Copy a brief
This record as a short Markdown brief, for a ticket, a chat or a coding agent.
the brief as text
# CVE-2026-27966: Langflow Remote Code Execution in CSV Agent https://gcdradar.vercel.app/incidents/cve-2026-27966-langflow-remote-code-execution-in-csv-agent · AIR-2026-0484 · closed 2026-02-26 - Lane: Patch now - Severity: 2 (Disclosed vulnerability) - Fix status: Fix status unknown - First reported: 2026-02-26 (happened 2026-02-27) - AI role: Attack on AI - Products: Langflow, LangChain - CVE ids: CVE-2026-27966 - CVSS: 9.8 ## Summary Langflow hardcodes dangerous code execution in its CSV Agent node, enabling remote code execution via prompt injection. Users are advised to upgrade to patched versions. ## What to do No action recorded; read the sources below and the vendor's advisory. ## Latest updates - 2026-02-27: CVE-2026-27966: Langflow has Remote Code Execution in CSV Agent (https://github.com/advisories/GHSA-3645-fxcv-hqr4) - 2026-02-26: CVE-2026-27966: Langflow is a tool for building and deploying AI-powered agents and workflows. (https://nvd.nist.gov/vuln/detail/CVE-2026-27966) ## Sources - 2026-02-26 NVD: CVE-2026-27966: Langflow is a tool for building and deploying AI-powered agents and workflows. https://nvd.nist.gov/vuln/detail/CVE-2026-27966 - 2026-02-27 GitHub Advisory Database: CVE-2026-27966: Langflow has Remote Code Execution in CSV Agent https://github.com/advisories/GHSA-3645-fxcv-hqr4 Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.
Related
- closedLangChain family RCE Vulnerabilities in LLM-Integrated Applications via Prompt Injection
Research · since 27 Feb 2025
AI - closed9.9Semantic Kernel RCE Vulnerability in Microsoft Semantic Kernel Search Plugin
Research · since 7 May 2026 · updated 30 Jun 2026 · CVE-2026-26030
AI - closed9.5Flowise Flowise CSV Agent prompt injection leads to remote code execution
Patch now · Disclosed · since 4 Aug 2026 · CVE-2026-70477
AI - closed8.3Langflow CVE-2026-107366: IBM Langflow OSS lacks ownership verification on message endpoints enabling session hijacking
Patch now · Disclosed · since 20 Oct 2026 · CVE-2026-107366
AI - closed9.1Langflow CVE-2026-7663: IBM Langflow OSS MCP Resource Access Vulnerability
Patch now · Disclosed · since 30 Jun 2026 · CVE-2026-7663
AI - closed8.8Langflow CVE-2026-7700: Langflow LambdaFilterComponent code injection vulnerability
Patch now · Disclosed · since 3 May 2026 · updated 5 Oct 2026 · CVE-2026-7700
AI