What is the CVSS score of CVE-2026-7874?

CVE-2026-7874 has a CVSS 3.1 base score of 9.1 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.2%.

Langflow Oss CVE-2026-7874

EUVD-2026-40380 CRITICAL

Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CWE-338)

2026-06-30 ibm

GHSA-32fv-f5hq-fmx9

Information Disclosure IBM Langflow Oss

9.1

CVSS 3.1 · Vendor: ibm

View

Vulnerability Assessment

Weakness

CWE

CWE-338

OWASP Top 10:2025

A04:2025 - Cryptographic Failures

ASVS 5.0

V11 - Cryptography Cryptographic PRNG selection

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jun 30, 2026

Credential disclosure in IBM Langflow OSS versions 1.0.0 through 1.10.0 stems from a weak, reversible key-derivation mechanism used to protect secrets encrypted at rest, allowing an attacker who can reach the stored credential data to recover the encryption key and decrypt every stored credential. Because Langflow stores API keys, database connection strings, and third-party service tokens used by AI workflow components, recovery of these secrets gives an attacker the keys to all integrated systems. There is no public exploit identified at time of analysis, no CISA KEV listing, and no EPSS score supplied, so the threat is currently theoretical but high-impact, and IBM (the reporter) has released a fix.

Affected VersionsENISA

Langflow OSS 1.0.0 ≤1.10.0

Affected Packages

euvd langflow_oss no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (ibm) PRIMARY 9.1 CRITICAL

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

Primary rating from Vendor (ibm) · only source for this CVE.

CVSS VectorVendor: ibm

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

DescriptionCVE.org

IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow disclosure of all stored credentials due to the use of a weak and reversible key derivation mechanism for encryption at rest.

Executive ViewAI

Why It Matters

IBM Langflow OSS versions 1.0.0-1.10.0 use inadequate encryption for stored credentials, enabling attackers with access to backend data to decrypt all API keys, database passwords, and third-party service tokens. This directly compromises all systems-databases, APIs, cloud services-that Langflow integrates with, creating a single point of failure for organizational security. Immediate patching and credential rotation are critical to prevent lateral movement across your integrated application ecosystem.

Recommended Action

Within 24 hours: Inventory all systems running IBM Langflow OSS versions 1.0.0-1.10.0 and isolate or restrict network access as needed. Within 7 days: Apply the vendor patch by upgrading to the patched version released by IBM. Within 30 days: Rotate all API keys, database credentials, and third-party service tokens previously managed by affected Langflow instances, and conduct audit logs for unauthorized access to integrated systems.

Business Impact: Severe

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.2%

Top 94% exploitable

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

Vulnrichment

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

CRITICAL severity

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision

Out-of-Cycle

Exploitation

None

System Exposure· derived

Open

Automatable

Yes

Human Impact

Very High

Technical Impact

Total

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +46

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.