NVD / CVE Program· CNA ibm

CVE-2026-19295: Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

Noroxi assessment

Priority: Plan (action score 40/100)

A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
Because a ready-made attack tool exists, priority is at least “Plan”.
Probability of exploitation in the next 30 days: 1.5% (FIRST EPSS); higher than 75.2% of all records.
Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
According to the record, no fixed version is available yet.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.9 · v3.1—Weaponized No fix recorded

Published: Aug 28, 2026
Updated: Sep 1, 2026
EPSS: 1.5% · 75th percentile
CWE: CWE-95

Report tools

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Action score

Plan

Add it to your regular patch cycle.

CVSS: 39 / 40 · 9.9 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.5%
Ready-made attack tool: 1 / 40 · floor: at least 40

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · ibm: 9.9; NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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Not in KEV: no record of exploitation in the wild
Weaponized exploit exists
No fixed version yet

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
langflow	langflow	cpe:2.3:a:langflow:langflow

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

langflow langflow1.0.0 and later · before 1.11.2

Versions reported by the vendor

Affected version ranges reported by the assigning authority (ibm). Independent of NVD's CPE analysis and usually ahead of it.

IBM Langflow OSS
- 1.0.0 and later · up to and including 1.11.1affected · semver

Same product

langflow: all records

Other highest-scoring records for the same primary product.

CVE-2025-3248Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/codeKEV
99Now
CVE-2026-33017Langflow has Unauthenticated Remote Code Execution via Public Flow Build EndpointKEV
96Now
CVE-2025-34291Langflow <= 1.6.9 CORS Misconfiguration to Token Hijack & RCEKEV
95Now

Published before and after this one in the same product

← EarlierCVE-2026-19286Aug 28, 2026 · Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
39Monitor
← EarlierCVE-2026-19294Aug 28, 2026 · Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
26Monitor
Later →CVE-2026-8447Sep 4, 2026 · Langflow is vulnerable to stored cross-site scripting and IP spoofing due to unsanitized Markdown rendering and untrusted proxy header trust
24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Metasploit module ×1
Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Metasploit module	exploit/multi/http/langflow_auth_rce_cve_2026_19295Langflow AI authenticated RCEexploit	2026-08-28
Proof-of-concept repository on GitHub	stars:0	2026-08-28

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

First PoCAug 28, 2026-1 d
MetasploitAug 28, 2026-1 d
PublishedAug 28, 2026
TodayNov 9, 2026+73 d

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-0769217 days apartLangflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability
60This week

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-189040 days apartLangflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
32Monitor
CVE-2026-188910 days apartLangflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
32Monitor
CVE-2026-188990 days apartLangflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
30Monitor
CVE-2026-198759 days apartUnauthenticated Registration POST Endpoint Permits Admin Email Overwrite and Outbound Relay Abuse in Langflow
30Monitor