RCE in Flowiseai Flowise
CVE-2026-91936
Flowise versions before 3.1.4 contain a script injection vulnerability in Docker image build workflows where workflow_dispatch inputs are directly interpolated into shell run blocks. Attackers with repository write access can inject shell metacharacters through inputs like tag_version and node_version to execute arbitrary commands and steal AWS credentials and Docker Hub tokens.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-jrcq-qjw5-xx5q (vendor-advisory)
- www.vulncheck.com/advisories/flowise-before-3.1.4-script-injection-via-docker-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-91936?
- CVE-2026-91936 is a medium-severity vulnerability in Flowiseai Flowise, classified under OS Command Injection. CVSS score: 6.8/10. Published 2026-09-15.
- How severe is CVE-2026-91936?
- Medium severity. CVSS v3 base score is 6.8 out of 10.