How severe is CVE-2026-10561?

CVE-2026-10561 has a CVSS 3.x base score of 10.0, 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-2026-10561 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-10561?

CVE-2026-10561 affects Langflow. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-10561?

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.

Does CVE-2026-10561 have an EU (EUVD) identifier?

Yes. CVE-2026-10561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38245.

When was CVE-2026-10561 published?

CVE-2026-10561 was published on 2026-06-22 and last updated on 2026-06-26.

CVE-2026-10561

CVE-2026-10561 is a critical-severity vulnerability in Langflow with a CVSS 3.x base score of 10.0. 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 10.0)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38245
Weakness: CWE-94
Affected product: Langflow
Published: 2026-06-22
Last modified: 2026-06-26

Description

IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise

Frequently asked questions

What is CVE-2026-10561?: IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise
How severe is CVE-2026-10561?: CVE-2026-10561 has a CVSS 3.x base score of 10.0, 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-2026-10561 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-10561?: CVE-2026-10561 affects Langflow. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-10561?: 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.
Does CVE-2026-10561 have an EU (EUVD) identifier?: Yes. CVE-2026-10561 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38245.
When was CVE-2026-10561 published?: CVE-2026-10561 was published on 2026-06-22 and last updated on 2026-06-26.

References

https://www.ibm.com/support/pages/node/7277242

Affected products (1)

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

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