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CVE-2026-73483

⚠️ high
🔍 Scan for this CVE
Summary

Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in t

Description

Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's file:// URL handling. In versions 3.0.8–3.1.2 exploitation requires ALLOW_BUILTIN_DEP=true; earlier versions are exploitable by default. Fixed in 3.1.3.

CVSS Score
8.8
High
EPSS Score
0.6
Exploit Probability
Published Date
2026-08-13
First Seen: 2026-08-14
📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 80.8% of all 358,566 vulnerabilities in our database.

#68,827
Top 25% most severe
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 14, 2026
🔍 Exploitation Status
Poc
Proof-of-concept available
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Total
Complete system compromise possible
🏆 Discovered By
Skaushik-Qlys (reporter)
SSVC data provided by CISA
Last Modified 2026-09-03
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Vector 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE IDs (Weakness Types)
CWE-78

📦 Affected Products 1

Vendor Product Status Affected Versions
flowiseai flowise Affected
< 3.1.2

🔗 References 2

https://github.com/FlowiseAI/Flowise/security/adviso...
Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/flowise-before-...
Third Party Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-90580 🔶 medium 6.3 0.2 A vulnerability was found in FlowiseAI Flowise up to 3.0.2. This vulnerability affects the function axios.post of the fi... 2026-09-13
CVE-2026-90533 🔶 medium 6.5 0.2 Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any auth... 2026-09-12
CVE-2026-90534 🔶 medium 6.5 0.2 Flowise is a low-code platform for building LLM applications. In versions up to and including 3.1.3, the POST /api/v1/no... 2026-09-12
CVE-2026-90535 ⚠️ high 7.5 0.3 Flowise versions before 3.1.4 contain an unauthenticated denial of service vulnerability in the /api/v1/text-to-speech/a... 2026-09-12
CVE-2026-52098 ⛔ critical 9.8 0.8 An issue in Flowise 3.1.2 allows a remote attacker to execute arbitrary code via the /api/v1/prediction/<flowId> endpoin... 2026-09-10
CVE-2026-73484 ⚠️ high 8.1 0.4 Flowise before 3.1.3 contains a sandbox escape vulnerability in pythonCodeValidator.ts that fails to block native Pandas... 2026-08-13
These CVEs affect the same products