IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote authenticated attacker to obtain sensitive information due to improper limitation of a pathname to a restricted directory.
**Risk verdict:** High risk; expedite remediation, although no KEV, SSVC exploitation, PoC or EPSS data was supplied to confirm active exploitation or refine urgency.
**Why this matters:** Exposure could reveal sensitive files or data, including credentials, workflow definitions, prompts and integration details that help attackers target connected systems. The scoring also indicates potential integrity impact, but the supplied vulnerability narrative does not explain that impact; validate it against your deployment and vendor guidance.
**Most likely attack path:** A remote attacker needs a valid account but no further user action, so stolen credentials or weak account controls could provide a direct route to exploitation. The unchanged scope suggests impact is confined to the affected service, though exposed secrets could enable follow-on access to connected platforms.
**Who is most exposed:** Internet-accessible or broadly reachable instances used by teams to build and run AI workflows are most exposed, especially where accounts or integrations hold sensitive data or powerful credentials.
Review application and proxy logs for unusual file-access paths, traversal patterns or repeated failed requests.
Investigate authenticated requests accessing unexpected files or directories.
Check for anomalous downloads and subsequent use of secrets associated with the service.
Mitigation and prioritisation:
Upgrade to the vendor-recommended fixed release; inventory all deployed instances first.
If patching is delayed, restrict network access and limit accounts to trusted users.
Rotate potentially exposed credentials and review access to connected services.
Test the upgrade in a representative environment, then deploy promptly with rollback plans.
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