Advisory details:
vulnrichment / CVE-2026-70477
| Advisory ID | vulnrichment/CVE-2026-70477 |
| Aliases | |
| Summary | Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, a prompt injection sent to a chatflow using a CSV Agent node can cause the LLM to respond with a malicious Python script that bypasses the blocklist validator and executes in an unsandboxed Pyodide environment. The specific flaw exists within the run method of the CSV_Agents class, where untrusted data is used to construct an LLM prompt and the resulting pythonCode is validated by validatePythonCodeForDataFrame before execution. An attacker can leverage this to execute arbitrary code in the context of the service account. This issue is fixed in 3.1.3. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 0.0 |
| Risk | |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv4 | 9.5 | |
| ssvc | Track* |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5xvg-pmgg-3mxr | ||
| 6499 | Other | https://github.com/FlowiseAI/Flowise/pull/6499 |
| f4e2794f6a576b94578f2fdafbf49c2fb304626c | Other | https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c |
| flowise@3.1.3 | Other | https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3 |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Attack Requirements (AT) | Privileges Required (PR) | User Interaction (UI) | Vulnerable System Impact Confidentiality (VC) | Vulnerable System Impact Integrity (VI) | Vulnerable System Impact Availability (VA) | Subsequent System Impact Confidentiality (SC) | Subsequent System Impact Integrity (SI) | Subsequent System Impact Availability (SA) |
|---|---|---|---|---|---|---|---|---|---|---|
network adjacent local physical |
low high |
none present |
none low high |
none passive active |
high low none |
high low none |
high low none |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:Y/T:T/P:M/B:A/M:M/D:R/2026-08-05T13:51:06Z/
Decision: Track*
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/70xxx/CVE-2026-70477.json
Source Advisory: vulnrichment/CVE-2026-70477
[{'Exploitation': 'poc'},
{'Automatable': 'yes'},
{'Technical Impact': 'total'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]