CVE-2026-81213 IBM Langflow OSS - Information Disclosure

IBM Langflow OSS 1.0.0 through 1.11.5 contains an information disclosure vulnerability caused by improper validation of user-supplied URLs, letting remote attackers obtain sensitive information from internal network resources, exploit requires crafted URL input.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.49% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Information Disclosure
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Published
10 September 2026
Updated
15 October 2026
Weakness
CWE-918

Vendor fix

Update to the latest version beyond 1.11.5.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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