How severe is CVE-2025-50538?

CVE-2025-50538 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2025-50538 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-50538?

CVE-2025-50538 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-50538?

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-2025-50538 have an EU (EUVD) identifier?

Yes. CVE-2025-50538 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-32219.

When was CVE-2025-50538 published?

CVE-2025-50538 was published on 2025-10-06 and last updated on 2026-06-17.

CVE-2025-50538

CVE-2025-50538 is a high-severity vulnerability in Flowiseai Flowise with a CVSS 3.x base score of 8.2. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-32219
Weakness: CWE-79
Affected product: Flowiseai Flowise
Published: 2025-10-06
Last modified: 2026-06-17

Description

Flowise before 3.0.5 allows XSS via an IFRAME element when an admin views the chat log.

Frequently asked questions

What is CVE-2025-50538?: Flowise before 3.0.5 allows XSS via an IFRAME element when an admin views the chat log.
How severe is CVE-2025-50538?: CVE-2025-50538 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2025-50538 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-50538?: CVE-2025-50538 affects Flowiseai Flowise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-50538?: 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-2025-50538 have an EU (EUVD) identifier?: Yes. CVE-2025-50538 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-32219.
When was CVE-2025-50538 published?: CVE-2025-50538 was published on 2025-10-06 and last updated on 2026-06-17.

References

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-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →