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CVE-2026-3357 IBM CVE debrief

IBM Langflow Desktop 1.6.0 through 1.8.2 is vulnerable due to an insecure default setting that permits the deserialization of untrusted data in the FAISS component. This allows authenticated users to execute arbitrary code on the system. The vulnerability has a high CVSS score of 8.8, indicating high severity. Users should review system configurations and apply patches provided by IBM.

Vendor
IBM
Product
Langflow Desktop
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

Users of IBM Langflow Desktop versions 1.6.0 through 1.8.2 should be concerned about this vulnerability as it allows authenticated users to execute arbitrary code on the system. System administrators and security teams should review system configurations and apply patches provided by IBM.

Technical summary

The vulnerability in IBM Langflow Desktop 1.6.0 through 1.8.2 is caused by an insecure default setting that permits the deserialization of untrusted data in the FAISS component. This could allow an authenticated user to execute arbitrary code on the system. The vulnerability has a high CVSS score of 8.8.

Defensive priority

High priority should be given to patching this vulnerability as it has a high CVSS score of 8.8 and allows for arbitrary code execution.

Recommended defensive actions

  • Apply the patches provided by IBM to update Langflow Desktop to a version that is not vulnerable.
  • Restrict access to the system to only trusted users.
  • Monitor the system for any suspicious activity.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-04-08T01:16:41.057Z and was last modified on 2026-07-24T23:10:00.563Z. The NVD entry is currently Analyzed. This vulnerability affects IBM Langflow Desktop versions 1.6.0 through 1.8.2, which permits the deserialization of untrusted data in the FAISS component. Evidence is limited to CVE and NVD details. Defenders should verify system configurations and user access controls.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-3357 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-3357

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

  • CVE-2026-3357 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-3357

    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.