CVE-2026-7700Public exploitNetwork attack vector

Server-side code execution via unrestricted lambda eval

Published May 3, 2026 · Updated May 3, 2026

Code injection in Langflow OSS 1.8.0 through 1.8.4 allows remote authenticated users to execute Python in the server process. Smart Transform performs only superficial format checks on an LLM-generated lambda, passes it to eval with full builtins, and invokes the resulting function. Direct exploitation requires flow-author access; indirect prompt injection also requires an exposed flow, attacker-controlled input, and a configured model that follows the injected instruction.

CVSS severity6.3
Medium
EPSS probability0.29%
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 Langflow OSS 1.8.0 through 1.8.4 allows remote authenticated users to execute Python in the server process. Smart Transform performs only superficial format checks on an LLM-generated lambda, passes it to eval with full builtins, and invokes the resulting function. Direct exploitation requires flow-author access; indirect prompt injection also requires an exposed flow, attacker-controlled input, and a configured model that follows the injected instruction.

The record

CVE
CVE-2026-7700
Published
May 3, 2026
Updated
May 3, 2026
Vendor
OpenBMC Project
Product
Langflow OSS
Classifications
CWE-74, CWE-94, T1059.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 3, 2026CVE publishedPublication date reported by the CVE source.
  2. May 3, 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=1.8.0
  2. Affected versionversion=1.8.1
  3. Affected versionversion=1.8.2
  4. Affected versionversion=1.8.3
  5. Affected versionversion=1.8.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenBMC Project · Langflow OSSversion=1.8.0; version=1.8.1; version=1.8.2; version=1.8.3; version=1.8.4

Published CVSS scores

8.8LangflowCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-94Improper Control of Generation of Code ('Code 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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