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CVE-2026-10700 IBM CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-30T19:17:02.100Z and has not been modified since then. The NVD entry is currently Undergoing Analysis. IBM Langflow OSS 1.0.0 through 1.8.4 contains multiple broken access control vulnerabilities in its file handling API. The /api/v1/files/images/{flow_id}/{file_name} endpoint does not enforce authentication or authorization checks, allowing unauthenticated remote attackers to retrieve image files associated with any flow by specifying a valid flow_id and file_name. Additionally, the /api/v1/files/download/{flow_id}/{file_name} endpoint requires authentication but fails to properly validate ownership of the requested resource, allowing authenticated users to access files belonging to other users by supplying arbitrary identifiers, leading to an authorization bypass (IDOR). Successful exploitation may result in unauthorized disclosure of sensitive data, including files stored in private flows. This issue breaks tenant isolation in multi-user deployments. Users of IBM Langflow OSS, especially those with multi-user deployments, should be aware of this vulnerability and take defensive actions to prevent unauthorized access to sensitive data. Medium-priority defensive actions are recommended due to the potential for unauthorized disclosure of sensitive data in multi-user deployments of IBM Langflow OSS. Evidence from the NVD and IBM support pages indicates that IBM Langflow OSS contains broken access control vulnerabilities in its file handling API. The /api/v1/files/images/{flow_id}/{file_name} endpoint lacks authentication and authorization checks, while the /api/v1/files/download/{flow_id}/{file_name} endpoint fails to validate resource ownership properly.

Vendor
IBM
Product
Langflow OSS
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-30
Original CVE updated
2026-07-31
Advisory published
2026-07-30
Advisory updated
2026-07-31

Who should care

Users of IBM Langflow OSS, especially those with multi-user deployments, should be aware of this vulnerability and take defensive actions to prevent unauthorized access to sensitive data.

Technical summary

IBM Langflow OSS 1.0.0 through 1.8.4 contains multiple broken access control vulnerabilities in its file handling API. The /api/v1/files/images/{flow_id}/{file_name} endpoint does not enforce authentication or authorization checks, allowing unauthenticated remote attackers to retrieve image files associated with any flow. The /api/v1/files/download/{flow_id}/{file_name} endpoint requires authentication but fails to properly validate ownership of the requested resource, allowing authenticated users to access files belonging to other users.

Defensive priority

Medium-priority defensive actions are recommended due to the potential for unauthorized disclosure of sensitive data in multi-user deployments of IBM Langflow OSS.

Recommended defensive actions

  • Implement authentication and authorization checks for the /api/v1/files/images/{flow_id}/{file_name} endpoint
  • Enhance validation of resource ownership for the /api/v1/files/download/{flow_id}/{file_name} endpoint
  • Enforce tenant isolation in multi-user deployments
  • Monitor for unauthorized access attempts to user files
  • Apply vendor-provided patches or updates

Evidence notes

Evidence from the NVD and IBM support pages indicates that IBM Langflow OSS contains broken access control vulnerabilities in its file handling API. The /api/v1/files/images/{flow_id}/{file_name} endpoint lacks authentication and authorization checks, while the /api/v1/files/download/{flow_id}/{file_name} endpoint fails to validate resource ownership properly.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-10700 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-10700

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

  • CVE-2026-10700 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-10700

    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.