CVE-2026-69255

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 0.7% (52nd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split(',').pop() and interpolated it directly into executable Python as base64_string = "${base64String}" before calling Pyodide. The validatePythonCodeForDataFrame() denylist only checked later LLM-generated code and did not validate this initial code block. An authenticated attacker could inject a closing quote followed by Python code, use Pyodide's js bridge to load Node.js child_process, and execute arbitrary operating system commands as root in the Flowise container. This issue is fixed in version 3.1.3.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
52nd
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 4, 2026

Last Modified

September 14, 2026

Advisory Details (4)

Auto-updated Sep 7, 2026
Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available

CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified · Advisory · FlowiseAI/Flowise · GitHub

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-vmv7-4m6c-3cg5
github_release Patch Available

[email protected]

Patch available: FlowiseAI/Flowise [email protected]

https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.3
github_pr Patch Available

Fix Flowise 606

Patch available: FlowiseAI/Flowise [email protected] (PR #6499 merged 2026-06-10)

https://github.com/FlowiseAI/Flowise/pull/6499
github_commit Patch Available

commit f4e2794f6a57 (FlowiseAI/Flowise)

Patch available: FlowiseAI/Flowise [email protected] (contains commit f4e2794f6a57)

https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c

Vendor Advisories for CVE-2026-69255(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
npm(2)
PackageVulnerable rangeFix by version rangeDependents
flowise—
  • every version up to 3.1.3: fixed in 3.1.3
—
flowise-components—
  • every version up to 3.1.3: fixed in 3.1.3
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 12× in last 7d / 44× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 109 total refreshes for this CVE.

  1. 2026-10-04 23:40 UTCEG score recompute
  2. 2026-10-04 23:22 UTCEPSS rescore
  3. 2026-10-04 06:12 UTCEG score recompute
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  1. 2026-09-18 19:28 UTCEPSS rescore
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  6. 2026-09-15 07:21 UTCEG score recompute
  7. 2026-09-14 20:00 UTCEG score recompute▼ 0.40
  8. 2026-09-14 19:59 UTCNVD updateCVSS v3 → 8.8 · severity → HIGH
  9. 2026-09-13 18:14 UTCEG score recompute
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  40. 2026-08-24 17:43 UTCEG score recompute
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  74. 2026-08-06 15:09 UTCEG score recompute
  75. 2026-08-06 13:47 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-69255?
CVE-2026-69255 is a high vulnerability published on August 4, 2026. Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split(',').pop() and interpolated it directly into executable Python as…
When was CVE-2026-69255 disclosed?
CVE-2026-69255 was first published on August 4, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-69255 actively exploited?
CVE-2026-69255 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (52nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-69255?
CVE-2026-69255 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-69255?
A fix for CVE-2026-69255 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-69255 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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