CVE-2025-34291

KEV
Published: Dic 05, 2025 Last Modified: Gen 16, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: passive
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 8,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high

Description

AI Translation Available

Langflow versions up to and including 1.6.9 contain a chained vulnerability that enables account takeover and remote code execution. An overly permissive CORS configuration (allow_origins='*' with allow_credentials=True) combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. An attacker-controlled origin can therefore obtain fresh access_token / refresh_token pairs for a victim session. Obtained tokens permit access to authenticated endpoints — including built-in code-execution functionality — allowing the attacker to execute arbitrary code and achieve full system compromise.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,1560
Percentile
0,9th
Updated

EPSS Score Trend (Last 75 Days)

346

Origin Validation Error

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Other
Potential Impacts:
Gain Privileges Or Assume Identity Varies By Context
Applicable Platforms
Technologies: Not Technology-Specific, Web Based
View CWE Details
Application

Langflow by Langflow

Product Information
Vendor Langflow
Product Langflow
Version Range Affected
To 1.6.9 (inclusive)
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/langflow-ai/langflow
https://github.com/langflow-ai/langflow
https://www.obsidiansecurity.com/blog/cve-2025-34291-critic…
https://www.obsidiansecurity.com/blog/cve-2025-34291-critical-account-takeover-…
https://www.vulncheck.com/advisories/langflow-cors-misconfi…
https://www.vulncheck.com/advisories/langflow-cors-misconfiguration-to-token-hi…