GCD AI RADAR
incidents/AIR-2026-1427

CVE-2026-107366: IBM Langflow OSS lacks ownership verification on message endpoints enabling session hijacking

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerabilityPrompt injectionAgent hijack

IBM Langflow OSS versions 1.0.0 through 1.12.4 contain message endpoints lacking ownership verification. Authenticated users can bulk-delete messages, inject malicious prompts by overwriting content, or hijack conversation sessions.

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

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Infrastructure vulnerabilityprimary
    CVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
  • Prompt injection
    Untrusted content (web pages, documents, emails, tool output) steers a model into ignoring its instructions.
  • Agent hijack
    An AI agent is tricked into unauthorized actions: tool misuse, data exfiltration through the agent, or acting against its principal.
owasp llm top 10
mitre atlas
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
2 · Disclosed vulnerability
CVE or vendor advisory, patched or patchable, no confirmed exploitation.
targets
Framework / tooling
products
IBM Langflow OSS
incident date
20 Oct 2026
first reported
20 Oct 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
CVE-2026-107366 · authorization · session_hijack · infra_vuln
record
created 2026-10-20 04:59Z · updated 2026-10-20 04:59Z · json

Sources · 1

  1. 2026-10-20
    CVE-2026-107366: IBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-107366

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