CVE-2026-107366
highIBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification.
Vendor / product: Langflow — langflow
IBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification. Any authenticated user can bulk-delete another user's messages, overwrite message content to inject malicious prompts, or hijack an entire conversation session by reassigning its session ID.
CVSS
8.3
8.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L Severity source: NVD CVSS v3.1 (psirt@us.ibm.com)
Timeline (UTC)
Published: 2026-10-20 00:17
Modified: 2026-11-03 15:12
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-11-03 15:20 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
langflow / langflow ≥1.0.0 <1.12.5
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.ibm.com/support/pages/node/7293016
Patch / mitigation: https://www.ibm.com/support/pages/node/7293016
References
- https://www.ibm.com/support/pages/node/7293016 psirt@us.ibm.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 15:20 UTC · record ↗