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IBM Langflow OSS CVE-2026-101329

| EUVDEUVD-2026-94128 MEDIUM
Improper Access Control (CWE-284)
2026-10-06 ibm GHSA-pc86-f397-xcjj
6.5
CVSS 3.1 · Vendor: ibm
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Severity by source

Vendor (ibm) PRIMARY
6.5 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
6.5 MEDIUM

Network-accessible with low complexity and no user interaction; PR:L because valid authentication is required per CWE-284 improper access control; C:H with I:N/A:N as only sensitive data is disclosed.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (ibm).

CVSS VectorVendor: ibm

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

1
Analysis Generated
Oct 07, 2026 - 00:51 vuln.today

DescriptionCVE.org

IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote authenticated attacker to obtain sensitive information due to improper access control.

AnalysisAI

Information disclosure in IBM Langflow OSS versions 1.0.0 through 1.12.2 allows a remote authenticated attacker with only low-level privileges to obtain sensitive information, because authorization checks are not properly enforced on certain resources. The assessed vector (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, base 6.5) confirms network reachability and low attack complexity but also that a valid account is a prerequisite, so unauthenticated external attackers cannot exploit it directly; there is no integrity or availability impact. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to already hold valid authenticated credentials on an IBM Langflow OSS instance (version 1.0.0 through 1.12.2), consistent with PR:L - even a low-privilege account suffices. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a moderate-severity information disclosure (CVSS 6.5) rated by IBM with vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N - network-reachable, low attack complexity, but requiring low-level authentication (PR:L) and yielding high confidentiality impact with no integrity or availability effect, consistent with CWE-284 improper access control. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Patch status is 'Patch available per vendor advisory': IBM has published a fix through IBM Support node 7290694 (https://www.ibm.com/support/pages/node/7290694), and the exact patched version string should be taken from that advisory rather than assumed, since the provided data does not specify a minimum fixed release - operators running 1.0.0 through 1.12.2 should upgrade to the version IBM designates as fixed before exposing the instance further. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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Arbitrary file write in IBM Langflow OSS 1.0.0 through 1.10.0 lets an attacker who controls an external HTTP server plan

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CVE-2026-101329 vulnerability details – vuln.today

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