CVE-2026-18729

highpriority · attend · 46EPSS 0.016 · 75 %ileexploit · weaponizedDEUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · weaponized

Likely / severe?

1.55% (75th) EPSS

CVSS 8.8 · high

Is it mine?

3 products

Check your exposure

Who says so?

2 sources

cert_bund · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · psirt@us.ibm.com USexploitability 2.8 · impact 5.9

v3.18.6highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Fsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94US

exploits (2)

Public proof-of-concept and weaponised exploit code.

exploit/multi/http/langflow_auth_rce_cve_2026_18729Langflow AI Custom Component Authenticated RCEweaponized · metasploit
rmhowe425/POC-CVE-2026-18729Proof of concept exploit code for CVE-2026-18729PoC · poc_in_github

affected products (3)

Products and version ranges known to be affected.

Open Source Langflow <1.11.2all versionscert_bundDE
Open Source Langflow< 1.11.2cert_bundDE
langflow langflow1.0.0 → 1.11.2nvdUScpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2995Langflow OSS: Mehrere SchwachstellenDeutsch2026-08-24csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Langflow OSS ausnutzen, um beliebigen Programmcode auszuführen, und um beliebigen Programmcode mit Administratorrechten auszuführen.

sources

Which sources assert this record, and when.

cert_bund nvd NVD CVE.org MITRE

published 2026-08-28modified 2026-09-01

references (1) nvd

External citations — patches, advisories, analysis.

https://www.ibm.com/support/pages/node/7284733Vendor Advisory

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan