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Public proof of conceptFix available

CVE-2026-18729

A public proof of concept exists; no exploitation attested.

  • Published2026-08-28
  • Fixed in1.11.2
  • WeaknessCWE-94

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 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.

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_18729rank: 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:U/C:H/I:H/A:H
Published
2026-08-28
Last Modified
2026-09-01
NVD status
Analyzed
GitHub Advisory
GHSA-q78m-9m47-w7gw

Frequently asked questions

What is CVE-2026-18729?

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.

Is CVE-2026-18729 actively exploited?

Active exploitation of CVE-2026-18729 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-2026-18729?

CVE-2026-18729 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record