CVE-2026-107366Langflow OSS Authorization Bypass Through User-Controlled Key
Updated under an hour ago ()
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It affects IBM Langflow OSS. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- ibm
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 20, 2026
Affected products
IBM Langflow OSS ibm:langflow_oss | from 1.0.0 through 1.12.4 | CNA record |
References
- https://www.ibm.com/support/pages/node/7293016vendor-advisory, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.