How severe is CVE-2026-7873?

CVE-2026-7873 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-7873 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7873?

CVE-2026-7873 affects Langflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7873?

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-2026-7873 published?

CVE-2026-7873 was published on 2026-06-30 and last updated on 2026-07-02.

CVE-2026-7873

CVE-2026-7873 is a critical-severity vulnerability in Langflow with a CVSS 3.x base score of 9.9. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Langflow
Published: 2026-06-30
Last modified: 2026-07-02

Description

IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.

Frequently asked questions

What is CVE-2026-7873?: IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.
How severe is CVE-2026-7873?: CVE-2026-7873 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-7873 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7873?: CVE-2026-7873 affects Langflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7873?: 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-2026-7873 published?: CVE-2026-7873 was published on 2026-06-30 and last updated on 2026-07-02.

References

https://www.ibm.com/support/pages/node/7278441

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…
CVE-2026-10561 — Critical (CVSS 10.0): IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined…
CVE-2026-19295 — Critical (CVSS 9.9): IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands…
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…

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Threat intelligence

Threat-intel indicators referencing this CVE:

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