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CVE-2026-19297 IBM CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-13T21:17:45.870Z and has not been modified since then. This vulnerability affects IBM Langflow OSS versions 1.0.0 through 1.9.6, allowing remote attackers to gain unauthorized access to user accounts due to improper restriction of excessive authentication attempts. Organizations should review their deployments and prioritize patching.

Vendor
IBM
Product
Langflow OSS
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-13
Original CVE updated
2026-08-26
Advisory published
2026-08-13
Advisory updated
2026-08-26

Who should care

Organizations using IBM Langflow OSS 1.0.0 through 1.9.6, security teams, and administrators responsible for patching and vulnerability management should prioritize remediation efforts to prevent potential unauthorized access to user accounts.

Technical summary

IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts. This vulnerability has a CVSS score of 9.1 and is classified as CRITICAL. Affected organizations should assess their deployments and apply patches or mitigations to prevent unauthorized access.

Defensive priority

Organizations using IBM Langflow OSS 1.0.0 through 1.9.6 should prioritize patching to prevent unauthorized access to user accounts.

Recommended defensive actions

  • Inventory and verify if using IBM Langflow OSS 1.0.0 through 1.9.6
  • Apply patches or updates provided by the vendor
  • Monitor for suspicious authentication attempts
  • Implement compensating controls, such as rate limiting or IP blocking
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The CVE record indicates that IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts. Evidence is limited, and further verification is needed to confirm affected scope and vendor remediation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-19297 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-19297

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

  • CVE-2026-19297 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-19297

    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.