RCE in Langflow
CVE-2026-12822
A vulnerability was identified in langflow-ai langflow up to 1.9.3. This affects an unknown function of the component Bundle URL Loader. The manipulation leads to code injection. The attack needs to be performed locally. The vendor was contacted early about this disclosure but did not respond in any way.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (18.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Langflow
- Langflow-Ai Langflow — versions 1.9.0, 1.9.1, 1.9.2
Weakness classification (CWE)
References
- vuldb.com/vuln/372612 (VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/372612/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/cve/CVE-2026-12822 (VDB Entry, Third Party Advisory, third-party-advisory)
- vuldb.com/submit/837582 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/dxz0069/softwareoverflow/blob/main/langflow_bundle_url_custom_compon… (related, Exploit, Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2026-12822?
- CVE-2026-12822 is a medium-severity vulnerability in Langflow, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.3/10. Published 2026-06-22.
- How severe is CVE-2026-12822?
- Medium severity. CVSS v3 base score is 5.3 out of 10.