Langflow OSS Authorization Bypass Through User-Controlled Key (IBM Langflow OSS)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.30 % · percentile 23 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- ibm
- NVD status
- Awaiting Analysis
Description
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.
Weaknesses (CWE)
- CWE-639 — Authorization Bypass Through User-Controlled Key
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | ibm |
| CVSS 3.1 | HIGH 8.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | NVD · psirt@us.ibm.com (Secondary) |
European references
- ENISA EUVD · EUVD-2026-104676
- GCVE · GCVE-0-2026-107366
Affected products
| Product | Versions |
|---|---|
| IBM · Langflow OSS | affected 1.0.0 ≤ 1.12.4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |