CVE-2025-34291 Details
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.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2025-34291
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
11.62 Probability of exploitation activity being observed over the next 30 days (94rd percentile)
CVSS score for CVE-2025-34291
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
8.8 High
Products affected by CVE-2025-34291
Langflow 1.5.0
Langflow 1.5.1
Langflow 1.6.0
Langflow 1.6.3
Langflow 1.6.4
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2025-34291 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 16 43.24%
DE 5 13.51%
GB 4 10.81%
RU 3 8.11%
KR 2 5.41%
CA 1 2.70%
CN 1 2.70%
FR 1 2.70%
IE 1 2.70%
IL 1 2.70%

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CVE-2025-34291 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 34 97.14%
Education 1 2.86%

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