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NVD / CVE Program· CNA ibm

CVE-2026-7873: Code Injection Vulnerability in Code Validation Endpoint

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 74.9% 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.
  • Fixed version: langflow (PyPI) 1.10.1.rc0.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Add it to your regular patch cycle. Upgrade to langflow (PyPI) 1.10.1.rc0 or later.

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 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.

CriticalCVSS 9.9 · v3.1—Weaponized Fix available
Published
Jun 30, 2026
Updated
Oct 25, 2026
EPSS
1.5% · 74th percentile

Report tools

JSON

Action score

40

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.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-7873

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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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.

VendorProduct
langflowlangflow

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 · up to 1.10.0 inclusive

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 1.10.0affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
PyPIlangflowfrom 1.0.0 · before 1.10.1.rc01.10.1.rc0

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-2026-7803Jun 30, 2026 · Flow Validation Bypass via Empty Component Type Field
    39Monitor
  • ← EarlierCVE-2026-7871Jun 30, 2026 · Insecure Deserialization in Redis Cache Backend
    39Monitor
  • Later →CVE-2026-7874Jun 30, 2026 · Weak Cryptographic Key Derivation Exposed All Stored Credentials
    36Monitor

Remediation

Which version to upgrade to

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

Product / packageFixed versionSource
PyPI:langflow1.10.1.rc0Package registry (OSV)

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
SourceKindDate
Metasploit moduleexploit/multi/http/langflow_auth_rce_cve_2026_7873Langflow AI Code Validation Authenticated RCEexploit2026-06-30
Proof-of-concept repository on GitHubstars:32026-09-05

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.

  1. Metasploit-1 d
  2. Published
  3. First PoC+66 d
  4. TodayOct 27, 2026+118 d
EPSS, last 120 days+1% in 7 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-2026-33017102 days apartLangflow has Unauthenticated Remote Code Execution via Public Flow Build EndpointKEV
    96Now
  • CVE-2026-919817 days apartUnauthenticated Remote Code Execution via Auto-Login Bypass and Code ValidationKEV
    78This week
  • CVE-2026-101340 days apartUnauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
    60This week
  • CVE-2026-9367499 days apartLangflow OSS is affected by multiple vulnerabilities
    60This week
  • CVE-2026-27966125 days apartLangflow has Remote Code Execution in CSV Agent
    60This week
  • CVE-2026-0768158 days apartLangflow code Code 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-2026-105618 days apartUnauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection
    40Plan
  • CVE-2026-76648 days apartUnauthenticated Flow Execution via Webhook Endpoint in Langflow OSS
    39Monitor
  • CVE-2026-105600 days apartUnauthenticated Access to Private Flow Build Events and Cancellation in Langflow OSS
    36Monitor
  • CVE-2026-778719 days apartUnauthenticated Session History Access via Public Flow Execution
    32Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • 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.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-94 · Improper Control of Generation of Code ('Code Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓
  2. Exploit maturitypoc → weaponized

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records