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CVE-2026-97655 IBM CVE debrief

IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote attacker to execute arbitrary code due to an incomplete blocklist in the code security scanner. This CVE record was published on 2026-10-06T23:59:07.370Z and has not been modified since then. The NVD entry is currently null. Defenders should assess exposure, verify scanner effectiveness, and update blocklists as necessary to mitigate potential remote code execution risks. Langflow OSS deployments, especially those using versions 1.0.0 through 1.12.2, require immediate attention to prevent potential attacks.

Vendor
IBM
Product
Langflow OSS
CVSS
HIGH 8.8
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

Defenders responsible for Langflow OSS deployments, especially those using versions 1.0.0 through 1.12.2, should assess exposure and verify the effectiveness of their code security scanners.

Why it matters

CVE-2026-97655 allows remote code execution in IBM Langflow OSS 1.0.0 through 1.12.2 due to an incomplete blocklist in the code security scanner. Defenders should verify exposure, assess scanner effectiveness, and update blocklists as necessary.

  • Remote code execution possible due to incomplete blocklist
  • Code security scanner effectiveness requires verification
  • Exposure verification needed for Langflow OSS deployments

Technical summary

IBM Langflow OSS 1.0.0 through 1.12.2 is vulnerable to remote code execution due to an incomplete blocklist in the code security scanner. This allows a remote attacker to execute arbitrary code. The vulnerability highlights the need for defenders to verify exposure of Langflow OSS deployments and assess the effectiveness of their code security scanners. Updating blocklists and implementing compensating controls can help mitigate the risk of remote code execution.

Defensive priority

Defenders should prioritize verifying exposure of Langflow OSS deployments, especially those using versions 1.0.0 through 1.12.2, and assess the effectiveness of their code security scanners.

Recommended defensive actions

  • Verify Langflow OSS deployments for exposure, especially versions 1.0.0 through 1.12.2
  • Assess code security scanner effectiveness
  • Review and update blocklists as necessary

Evidence notes

The CVE record and source item provide details on the vulnerability, but additional verification is needed to confirm affected deployments and remediation effectiveness.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-97655 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-97655

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

  • CVE-2026-97655 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-97655

    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/2026/97xxx/CVE-2026-97655.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.