CVE-2026-33484Public exploitNetwork attack vector

Unauthenticated image disclosure via missing endpoint authorization

Published Mar 24, 2026 · Updated Mar 24, 2026

Information disclosure in Langflow OSS 1.0.0 through 1.8.1 allows remote attackers to download uploaded images via crafted requests. The download_image route accepts flow and file identifiers but omits the authentication and ownership dependencies used by other file routes. A reachable multi-tenant deployment and a known or guessed flow identifier and filename expose another tenant's image contents without credentials.

CVSS severity7.5
High
EPSS probability5.84%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Langflow OSS 1.0.0 through 1.8.1 allows remote attackers to download uploaded images via crafted requests. The download_image route accepts flow and file identifiers but omits the authentication and ownership dependencies used by other file routes. A reachable multi-tenant deployment and a known or guessed flow identifier and filename expose another tenant's image contents without credentials.

The record

CVE
CVE-2026-33484
Published
Mar 24, 2026
Updated
Mar 24, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-862, CWE-639, CWE-284, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 24, 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, < 1.9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=>= 1.0.0, < 1.9.0

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-639Authorization Bypass Through User-Controlled Key
CWE-284Improper Access Control
T1190Exploit Public-Facing Application

Public exploit references

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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