CVE-2026-41264

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 56% of all CVEs by exploit prediction. 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
Weaponized
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the specific flaw exists within the run method of the CSV_Agents class. The issue results from the lack of proper sandboxing when evaluating an LLM generated python script. An attacker can leverage this vulnerability to execute code in the context of the user running the server. Using prompt injection techniques, an unauthenticated attacker with the ability to send prompts to a chatflow using the CSV Agent node may convince an LLM to respond with a malicious python script that executes attacker controlled commands on the Flowise server. This vulnerability is fixed in 3.1.0.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
59.6%
KEV
Not listed

Published

April 23, 2026

Last Modified

April 24, 2026

Advisory Details (1)

Auto-updated May 11, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

CSV Agent Prompt Injection Remote Code Execution Vulnerability · Advisory · FlowiseAI/Flowise · GitHub

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3hjv-c53m-58jj

Affected Packages

(2 across 1 ecosystem)
npm(2)
PackageVulnerable rangeFixed inDependents
flowise—3.1.0—
flowise-components—3.1.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 42× 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 141 total refreshes for this CVE.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:15 UTCEPSS rescore
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  1. 2026-06-19 19:25 UTCEPSS rescore
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  7. 2026-06-15 06:42 UTCEG score recompute
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  12. 2026-06-13 23:00 UTCEPSS rescore
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  44. 2026-06-07 15:25 UTCEPSS rescore
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  70. 2026-06-04 11:52 UTCEG score recompute
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  74. 2026-06-03 15:56 UTCEG score recompute
  75. 2026-06-03 12:10 UTCEG score recompute

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Metasploitexploit/multi/http/flowise_auth_rce_cve_2026_41264✓ verified
    First seen Apr 22, 2026

    Flowise CSV Agent Prompt Injection RCE

    Open source ↗

Frequently asked(5)

What is CVE-2026-41264?
CVE-2026-41264 is a critical vulnerability published on April 23, 2026. Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the specific flaw exists within the run method of the CSV_Agents class. The issue results from the lack of proper sandboxing when evaluating an LLM generated python script. An attacker can…
When was CVE-2026-41264 disclosed?
CVE-2026-41264 was first published in the National Vulnerability Database on April 23, 2026, with the most recent update on April 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-41264 actively exploited?
CVE-2026-41264 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-41264?
CVE-2026-41264 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-41264?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-41264, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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