CVE-2026-17631Network attack vectorHinoki check available

Internal data disclosure via unvalidated component URLs

Published Sep 4, 2026 · Updated Sep 4, 2026

SSRF in IBM Langflow OSS 1.0.0 through 1.10.2 allows remote authenticated users to read sensitive data from internal HTTP services. Multiple flow components send user-supplied URLs without applying Langflow's existing SSRF validation, and Docling Serve bypasses protection even when enabled. Standard authenticated flow execution or component configuration access is required; responses or errors can expose cloud metadata, loopback administration interfaces, and internal microservices.

CVSS severity5.0
Medium
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in IBM Langflow OSS 1.0.0 through 1.10.2 allows remote authenticated users to read sensitive data from internal HTTP services. Multiple flow components send user-supplied URLs without applying Langflow's existing SSRF validation, and Docling Serve bypasses protection even when enabled. Standard authenticated flow execution or component configuration access is required; responses or errors can expose cloud metadata, loopback administration interfaces, and internal microservices.

The record

CVE
CVE-2026-17631
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
IBM
Product
Langflow OSS
Classifications
CWE-918, T1552.005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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 <=1.10.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Langflow OSSversion=1.0.0 <=1.10.2

Published CVSS scores

5.0IBMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1552.005Cloud Instance Metadata API

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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