CVE-2026-17630Network attack vector

High-privilege code execution via configuration validation gaps

Published Aug 5, 2026 · Updated Aug 5, 2026

Improper validation in IBM Langflow OSS 1.0.0 through 1.10.3 allows remote authenticated users to execute arbitrary code. IBM identifies configuration parameters as the input locus but does not disclose the affected fields, rejected-value gap, or evaluation operation. Exploitation requires a highly privileged authenticated account and no user interaction; successful code runs in the Langflow server context.

CVSS severity7.2
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper validation in IBM Langflow OSS 1.0.0 through 1.10.3 allows remote authenticated users to execute arbitrary code. IBM identifies configuration parameters as the input locus but does not disclose the affected fields, rejected-value gap, or evaluation operation. Exploitation requires a highly privileged authenticated account and no user interaction; successful code runs in the Langflow server context.

The record

CVE
CVE-2026-17630
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
IBM
Product
Langflow OSS
Classifications
CWE-184, T1210
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0 <=1.10.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

IBM · Langflow OSSversion=1.0.0 <=1.10.3

Published CVSS scores

7.2IBM CorporationCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-184Incomplete List of Disallowed Inputs
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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