CVE-2026-10546

HIGH

DNS Rebinding TOCTOU Bypass of SSRF Protection in Langflow OSS URL Component

Title source: cna

Description

IBM Langflow OSS 1.0.0 through 1.9.3 contains a Server-Side Request Forgery (SSRF) vulnerability in the URL component ( src/lfx/src/lfx/components/data_source/url.py ) due to a Time-of-Check/Time-of-Use (TOCTOU) race condition that can be exploited via DNS rebinding.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory patch

https://www.ibm.com/support/pages/node/7277560

Scores

CVSS v3 7.1

EPSS 0.0015

EPSS Percentile 4.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-918

Status published

Products (2)

IBM/Langflow OSS 1.0.0 - 1.9.3

langflow/langflow 1.0.0 - 1.9.3

Published Jun 30, 2026

Tracked Since Jul 01, 2026