How severe is CVE-2026-7803?

CVE-2026-7803 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-7803 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7803?

CVE-2026-7803 affects Langflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7803?

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

When was CVE-2026-7803 published?

CVE-2026-7803 was published on 2026-06-30 and last updated on 2026-07-02.

CVE-2026-7803

CVE-2026-7803 is a critical-severity vulnerability in Langflow with a CVSS 3.x base score of 9.8. 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-20.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Langflow
Published: 2026-06-30
Last modified: 2026-07-02

Description

IBM Langflow OSS 1.0.0 through 1.10.0 could allow arbitrary code execution due to improper validation of flow nodes with missing or empty component type fields.

Frequently asked questions

What is CVE-2026-7803?: IBM Langflow OSS 1.0.0 through 1.10.0 could allow arbitrary code execution due to improper validation of flow nodes with missing or empty component type fields.
How severe is CVE-2026-7803?: CVE-2026-7803 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-7803 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7803?: CVE-2026-7803 affects Langflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7803?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-7803 published?: CVE-2026-7803 was published on 2026-06-30 and last updated on 2026-07-02.

References

https://www.ibm.com/support/pages/node/7278445

Affected products (1)

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

More vulnerabilities in Langflow

CVE-2026-10134 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read…
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CVE-2026-12946 — Critical (CVSS 9.9): IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to inject arbitrary code on the system, due to the…
CVE-2026-13435 — Critical (CVSS 9.9): IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox…
CVE-2026-8859 — Critical (CVSS 9.9): IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations…

All CVEs affecting Langflow →

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Browse all CWE-20 (Improper Input Validation) vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

3.19.213.118 (ipv4-addr)
56.155.73.159 (ipv4-addr)