How severe is CVE-2026-3346?

CVE-2026-3346 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-3346 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3346?

CVE-2026-3346 affects Langflow Langflow Desktop. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3346?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-3346 have an EU (EUVD) identifier?

Yes. CVE-2026-3346 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26425.

When was CVE-2026-3346 published?

CVE-2026-3346 was published on 2026-04-30 and last updated on 2026-06-17.

CVE-2026-3346

CVE-2026-3346 is a medium-severity vulnerability in Langflow Langflow Desktop with a CVSS 3.x base score of 6.4. 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-89.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26425
Weakness: CWE-89
Affected product: Langflow Langflow Desktop
Published: 2026-04-30
Last modified: 2026-06-17

Description

IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.

Frequently asked questions

What is CVE-2026-3346?: IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
How severe is CVE-2026-3346?: CVE-2026-3346 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-3346 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3346?: CVE-2026-3346 affects Langflow Langflow Desktop. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3346?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-3346 have an EU (EUVD) identifier?: Yes. CVE-2026-3346 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26425.
When was CVE-2026-3346 published?: CVE-2026-3346 was published on 2026-04-30 and last updated on 2026-06-17.

References

https://www.ibm.com/support/pages/node/7271095

Affected products (1)

cpe:2.3:a:langflow:langflow_desktop:*:*:*:*:*:*:*:*

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