CVE-2026-12822Public exploit

Local code execution via untrusted bundle import

Published Jun 21, 2026 · Updated Jun 21, 2026

Code injection in the Bundle URL Loader in Langflow OSS 1.9.0 through 1.9.3 allows local users to execute arbitrary Python code. The startup loader fetches configured remote bundles, adds their custom-component files to component search paths, and imports them without trust approval or signature verification, executing module-level code. Reachability requires local low-privileged access sufficient to influence LANGFLOW_BUNDLE_URLS or a deployment template, and successful exploitation runs code with the Langflow server process privileges.

CVSS severity5.3
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in the Bundle URL Loader in Langflow OSS 1.9.0 through 1.9.3 allows local users to execute arbitrary Python code. The startup loader fetches configured remote bundles, adds their custom-component files to component search paths, and imports them without trust approval or signature verification, executing module-level code. Reachability requires local low-privileged access sufficient to influence LANGFLOW_BUNDLE_URLS or a deployment template, and successful exploitation runs code with the Langflow server process privileges.

The record

CVE
CVE-2026-12822
Published
Jun 21, 2026
Updated
Jun 21, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-94, CWE-74, T1059.006
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=1.9.0
  2. Affected versionversion=1.9.1
  3. Affected versionversion=1.9.2
  4. Affected versionversion=1.9.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=1.9.0; version=1.9.1; version=1.9.2; version=1.9.3

Published CVSS scores

1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1059.006Command and Scripting Interpreter: Python

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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