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Public proof of conceptFix available

CVE-2026-19295

A public proof of concept exists; no exploitation attested.

  • Published2026-08-28
  • Fixed in1.11.2
  • WeaknessCWE-95

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.

Timeline

dates in UTC
  1. 2026-08-2822:16CVE publishedNVD

Versions per branch

NVD
Langflow
BranchAffectedFixed in
1.x≥ 1.0.0, < 1.11.21.11.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As ibm, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • IBM Langflow OSS
    Affected
    • ≥ 1.0.0, ≤ 1.11.1no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-28

Fix

  1. Update Langflow to 1.11.2

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
1 moduleexploit/multi/http/langflow_auth_rce_cve_2026_19295rank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2026-08-28
Last Modified
2026-09-01
NVD status
Analyzed
GitHub Advisory
GHSA-74fg-mx2g-3cx8

Frequently asked questions

What is CVE-2026-19295?

IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.

Is CVE-2026-19295 actively exploited?

Active exploitation of CVE-2026-19295 has not been confirmed. Its EPSS score was 1.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-19295?

CVE-2026-19295 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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Sources for this record