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CVE-2026-12946 IBM CVE debrief

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 improper control of user input code. This CVE record was published on 2026-07-30T20:16:52.293Z and has not been modified since then. The NVD entry is currently Analyzed. Affected product deployments should be identified and assessed for exposure, with prioritization on verifying and mitigating potential code injection risks. The vulnerability has a CVSS score of 9.9, indicating critical severity.

Vendor
IBM
Product
Langflow OSS
CVSS
CRITICAL 9.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-30
Original CVE updated
2026-10-23
Advisory published
2026-07-30
Advisory updated
2026-10-23

Who should care

Defenders responsible for Langflow OSS deployments, particularly those using versions 1.0.0 through 1.10.0, should assess exposure and prioritize verifying and mitigating potential code injection risks.

Why it matters

CVE-2026-12946 is a critical vulnerability in IBM Langflow OSS that allows remote code injection. Defenders should prioritize verifying exposure, assessing potential risks, and implementing mitigations to prevent code injection attacks.

  • Verify and mitigate potential code injection risks in Langflow OSS deployments
  • Assess exposure and prioritize updates to version 1.10.1 or later
  • Implement input validation and sanitization for user input code

Technical summary

IBM Langflow OSS 1.0.0 through 1.10.0 is vulnerable to code injection due to improper control of user input code. A remote attacker could exploit this vulnerability to inject arbitrary code on the system. The vulnerability is classified as CWE-94 and has a CVSS score of 9.9, indicating critical severity. Defenders should assess exposure and implement mitigations to prevent code injection attacks, including input validation and sanitization for user input code.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential code injection risks in Langflow OSS deployments, particularly for versions 1.0.0 through 1.10.0.

Recommended defensive actions

  • Verify Langflow OSS version and check for updates to 1.10.1 or later
  • Assess exposure and potential code injection risks in Langflow OSS deployments
  • Implement input validation and sanitization for user input code

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its CVSS score of 9.9 and CWE-94 weakness. IBM has also provided a vendor advisory.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-12946 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-12946

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-12946 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-12946

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.