Vulnerability details

CVE-2026-7787

IBM Langflow OSS

Unauthenticated Session History Access via Public Flow Execution

CVSS 3.1

7.5High

Official description

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references.

CVSS scores

Score	Version	Source	Vector
7.5High	3.1	CVEProject cvelistV5 (CNA) (ibm)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

Affected products

Vendor	Product	Versions	Source
IBM	Langflow OSS	1.0.0 ≤ v ≤ 1.9.1	CVEProject cvelistV5 (CNA)

References and advisories

https://www.ibm.com/support/pages/node/7275453 vendor-advisorypatch

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Details

Published: 2026-06-11
Last updated: 2026-06-11
State: Published
Assigner (CNA): ibm

Exploit prediction (EPSS)

0.24%

Probability of exploitation in 30 days

16.2%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Partial

Weaknesses (CWE)

CWE-639
Authorization Bypass Through User-Controlled Key