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CVE-2026-18894

MEDIUM
6.5NVD

Summary

generated automatically from NVD data

IBM Langflow OSS versions 1.0.0 through 1.12.4 contain a code injection flaw (CWE-94) in how public workflows run component code. A remote attacker can trigger pre-existing stored Python component code in a public workflow, which then executes under the flow owner's runtime context inside the server process. This bypasses the trust boundary that limits public execution paths to server-trusted components, and the issue is rated 6.5 (MEDIUM, CVSS v3.1).

NVD description

IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python component code in a public workflow, executing it under the flow owner's runtime context within the server process. This bypasses the intended trust boundary where public execution paths are restricted to server-trusted component code.

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EPSS · FIRST.org

0.43%probability of exploitation in the next 30 days

Higher than 36% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-30, recomputed daily by FIRST.org.

CVSS v3.1 Score

6.5
/ 10.0
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Information

Published
29 oct. 2026
Updated
30 oct. 2026
Status
Analyzed
Source
psirt@us.ibm.com

Affected products

langflow langflow
Versions ≥ 1.0.0, < 1.12.5

Bounds published by NVD: "< 8.4.27" means 8.4.27 is no longer vulnerable. The fixed release to install is in the vendor advisory.

Weaknesses (CWE)

CWE-94

References (1)

Similar CVEs

Other vulnerabilities of type CWE-94

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