CVE-2025-3248: CWE-306 Missing Authentication for Critical Function in langflow-ai langflow
CVE-2025-3248 is a critical vulnerability in langflow versions prior to 1. 3. 0 that allows remote, unauthenticated attackers to execute arbitrary code via the /api/v1/validate/code endpoint. The issue arises from missing authentication on this critical function, enabling code injection through crafted HTTP requests. The vulnerability has a CVSS score of 9. 8, reflecting a high impact on confidentiality, integrity, and availability without requiring any user interaction or privileges. No known exploits are currently reported in the wild. Users of langflow should upgrade to version 1. 3. 0 or later when available and consider network-level restrictions to protect the vulnerable API endpoint.
AI Analysis
Technical Summary
CVE-2025-3248 is a critical security flaw in langflow prior to version 1.3.0 caused by missing authentication on the /api/v1/validate/code endpoint. This allows unauthenticated remote attackers to perform arbitrary code execution by sending crafted HTTP requests. The vulnerability is classified under CWE-306 (Missing Authentication for Critical Function) and carries a CVSS 3.1 base score of 9.8, indicating critical severity with network attack vector, low attack complexity, no privileges or user interaction required, and full impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on affected langflow instances without authentication, potentially leading to full system compromise. The critical nature of the flaw means confidentiality, integrity, and availability of the affected system can be fully compromised. Although no active exploits are known at this time, the ease of exploitation and severity pose a significant risk.
Mitigation Recommendations
A fix is available in langflow version 1.3.0 or later; users should upgrade to this version once it is released. Until then, implement network-level protections to restrict access to the /api/v1/validate/code endpoint to trusted sources only. Monitor vendor advisories for official patch releases and further guidance. Patch status is not yet confirmed as the patch link is not provided, so verify with the vendor for current remediation status.
CVE-2025-3248: CWE-306 Missing Authentication for Critical Function in langflow-ai langflow
Description
CVE-2025-3248 is a critical vulnerability in langflow versions prior to 1. 3. 0 that allows remote, unauthenticated attackers to execute arbitrary code via the /api/v1/validate/code endpoint. The issue arises from missing authentication on this critical function, enabling code injection through crafted HTTP requests. The vulnerability has a CVSS score of 9. 8, reflecting a high impact on confidentiality, integrity, and availability without requiring any user interaction or privileges. No known exploits are currently reported in the wild. Users of langflow should upgrade to version 1. 3. 0 or later when available and consider network-level restrictions to protect the vulnerable API endpoint.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-3248 is a critical security flaw in langflow prior to version 1.3.0 caused by missing authentication on the /api/v1/validate/code endpoint. This allows unauthenticated remote attackers to perform arbitrary code execution by sending crafted HTTP requests. The vulnerability is classified under CWE-306 (Missing Authentication for Critical Function) and carries a CVSS 3.1 base score of 9.8, indicating critical severity with network attack vector, low attack complexity, no privileges or user interaction required, and full impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on affected langflow instances without authentication, potentially leading to full system compromise. The critical nature of the flaw means confidentiality, integrity, and availability of the affected system can be fully compromised. Although no active exploits are known at this time, the ease of exploitation and severity pose a significant risk.
Mitigation Recommendations
A fix is available in langflow version 1.3.0 or later; users should upgrade to this version once it is released. Until then, implement network-level protections to restrict access to the /api/v1/validate/code endpoint to trusted sources only. Monitor vendor advisories for official patch releases and further guidance. Patch status is not yet confirmed as the patch link is not provided, so verify with the vendor for current remediation status.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2025-04-04T00:58:44.770Z
- Cisa Enriched
- true
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 682d981cc4522896dcbdad02
Added to database: 5/21/2025, 9:08:44 AM
Last enriched: 4/20/2026, 5:31:03 AM
Last updated: 5/9/2026, 3:19:37 PM
Views: 110
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.