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CVE-2026-104334 IBM CVE debrief

IBM Langflow OSS versions 1.0.0 through 1.12.2 are vulnerable to arbitrary code execution due to improper control of code generation. This critical vulnerability, with a CVSS score of 9.8, allows remote attackers to execute code, potentially impacting data integrity and confidentiality. Langflow OSS users and administrators should assess exposure and apply patches from IBM. The vulnerability's criticality and potential for remote code execution necessitate immediate attention and mitigation.

Vendor
IBM
Product
Langflow OSS
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-06
Original CVE updated
2026-10-08
Advisory published
2026-10-06
Advisory updated
2026-10-08

Who should care

Langflow OSS users and administrators should assess exposure and apply patches from IBM. This critical vulnerability requires immediate attention, as it allows remote code execution, potentially impacting data integrity and confidentiality. Security teams, platform operators, and vulnerability management teams should prioritize patching and verifying compensating controls for exposed systems.

Why it matters

CVE-2026-104334 is a critical vulnerability in IBM Langflow OSS that could allow remote attackers to execute arbitrary code. Langflow OSS users and administrators should assess exposure and apply patches from IBM. The vulnerability has a CVSS score of 9.8 and is considered critical.

  • Potential for remote code execution
  • Need for patch application and verification
  • Possible impact on data integrity and confidentiality

Technical summary

IBM Langflow OSS versions 1.0.0 through 1.12.2 are vulnerable to arbitrary code execution due to improper control of code generation. This vulnerability allows remote attackers to execute code, potentially impacting data integrity and confidentiality. The vulnerability has a CVSS score of 9.8, indicating critical severity. Langflow OSS users and administrators should assess exposure and apply patches from IBM.

Defensive priority

High priority for Langflow OSS users to assess exposure and apply patches

Recommended defensive actions

  • Assess exposure of Langflow OSS instances
  • Apply patches from IBM
  • Monitor for potential exploitation attempts

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on exploitation or impact. Defenders should verify Langflow OSS deployments, review official advisories, and monitor for potential exploitation attempts. Evidence is based on CVE Program and NVD records, with additional information from IBM support pages.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-104334 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-104334

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

  • CVE-2026-104334 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-104334

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

Supplemental references

  • Langflow OSS is affected by multiple vulnerabilities

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/104xxx/CVE-2026-104334.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://www.ibm.com/support/pages/node/7290694

    Supplemental source - vendor-advisory, patch

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.