CVE-2026-17627

MEDIUM

Published Sep 4, 2026 Modified Sep 9, 2026 CWE-639

Description

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive information and inject messages into workflow history due to improper authorization.

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CVSS v3.1 Score

4.9

MEDIUM

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

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
langflow	langflow	1.0.0 — 1.10.3
apple	macos	All
linux	linux_kernel	All
microsoft	windows	All

References

Advisories & Patches

https://www.ibm.com/support/pages/node/7286294

Frequently Asked Questions

What is CVE-2026-17627? +

IBM Langflow OSS 1.0.0 through 1.10.2 could allow a remote authenticated attacker to obtain sensitive information and inject messages into workflow history due to improper authorization. It has a CVSS v3.1 base score of 4.9 (MEDIUM).

How severe is CVE-2026-17627? +

CVE-2026-17627 has a CVSS v3.1 score of 4.9 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-17627? +

CVE-2026-17627 affects products from apple, langflow, linux, microsoft, specifically: langflow, linux_kernel, macos, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-17627? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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