CVE-2026-102590 — Langflow
MEDIUMCVE-2026-102590 is a medium-severity (CVSS 5) Server-Side Request Forgery (SSRF) vulnerability in langflow langflow. A fix is available — see the affected versions and patch details below.
IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to obtain sensitive information due to a server-side request forgery vulnerability.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Description
IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to obtain sensitive information due to a server-side request forgery vulnerability.
Affected Products
langflowlangflowDetection & mitigation playbook
Vendor / applianceDetect
Inventory every langflow langflow deployment and check each version against the affected-products list above.
Fix
Apply the langflow langflow security patch or hotfix for CVE-2026-102590 on the affected version, following the vendor advisory for your exact build.
Workarounds
Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
Frequently Asked Questions
Is CVE-2026-102590 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.