How severe is CVE-2026-41279?

CVE-2026-41279 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-41279 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-41279?

CVE-2026-41279 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-41279?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-41279 have an EU (EUVD) identifier?

Yes. CVE-2026-41279 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25298.

When was CVE-2026-41279 published?

CVE-2026-41279 was published on 2026-04-23 and last updated on 2026-06-17.

CVE-2026-41279

CVE-2026-41279 is a high-severity vulnerability in Flowiseai Flowise with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.2
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-25298
Weakness: CWE-639
Affected product: Flowiseai Flowise
Published: 2026-04-23
Last modified: 2026-06-17

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.

Frequently asked questions

What is CVE-2026-41279?: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.
How severe is CVE-2026-41279?: CVE-2026-41279 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-41279 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-41279?: CVE-2026-41279 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-41279?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-41279 have an EU (EUVD) identifier?: Yes. CVE-2026-41279 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-25298.
When was CVE-2026-41279 published?: CVE-2026-41279 was published on 2026-04-23 and last updated on 2026-06-17.

References

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-5fw2-mwhh-9947

Affected products (1)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

More vulnerabilities in Flowiseai Flowise

CVE-2025-71338 — Critical (CVSS 10.0): Flowise contains a path traversal vulnerability in the /api/v1/document-store/loader/process endpoint that allows…
CVE-2025-59528 — Critical (CVSS 10.0): Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5, Flowise is…
CVE-2026-56274 — Critical (CVSS 9.9): Flowise before 3.1.2 contains multiple OS command injection vulnerabilities in the Custom MCP Server feature due to…
CVE-2026-46442 — Critical (CVSS 9.9): Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST…
CVE-2026-40933 — Critical (CVSS 9.9): Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, due to unsafe…
CVE-2025-34267 — Critical (CVSS 9.9): Flowise v3.0.1 < 3.0.8 and all versions after with 'ALLOW_BUILTIN_DEP' enabled contain an authenticated remote code…

All CVEs affecting Flowiseai Flowise →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…
CVE-2026-34037 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-52782 — Critical (CVSS 9.9): OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through…
CVE-2026-45552 — Critical (CVSS 9.9): Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior,…
CVE-2026-29200 — Critical (CVSS 9.9): A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →