CVE-2026-4503: CWE-639 Authorization Bypass Through User-Controlled Key in IBM Langflow Desktop
IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' images due to an indirect object reference through a user-controlled key.
AI Analysis
Technical Summary
CVE-2026-4503 is an authorization bypass vulnerability in IBM Langflow Desktop (versions 1.0.0 through 1.8.4) where an unauthenticated attacker can access images belonging to other users. The issue arises from an indirect object reference that is controlled by the user, allowing unauthorized access to sensitive image data. The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key) and has a CVSS 3.1 base score of 7.5, indicating a high impact on confidentiality without requiring privileges or user interaction.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to view images of other users, leading to a confidentiality breach. There is no impact on integrity or availability reported. No known exploits are currently in the wild, but the vulnerability poses a significant risk due to the lack of authentication required for access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released by IBM, users should consider restricting access to the affected versions of Langflow Desktop and monitor for updates from IBM. No temporary or official fixes have been documented at this time.
CVE-2026-4503: CWE-639 Authorization Bypass Through User-Controlled Key in IBM Langflow Desktop
Description
IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' images due to an indirect object reference through a user-controlled key.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4503 is an authorization bypass vulnerability in IBM Langflow Desktop (versions 1.0.0 through 1.8.4) where an unauthenticated attacker can access images belonging to other users. The issue arises from an indirect object reference that is controlled by the user, allowing unauthorized access to sensitive image data. The vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key) and has a CVSS 3.1 base score of 7.5, indicating a high impact on confidentiality without requiring privileges or user interaction.
Potential Impact
Successful exploitation of this vulnerability allows an unauthenticated attacker to view images of other users, leading to a confidentiality breach. There is no impact on integrity or availability reported. No known exploits are currently in the wild, but the vulnerability poses a significant risk due to the lack of authentication required for access.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released by IBM, users should consider restricting access to the affected versions of Langflow Desktop and monitor for updates from IBM. No temporary or official fixes have been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-03-20T14:01:11.389Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f3c7f3cbff5d86108d5849
Added to database: 4/30/2026, 9:21:55 PM
Last enriched: 4/30/2026, 9:36:20 PM
Last updated: 5/1/2026, 3:09:22 AM
Views: 8
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.
External Links
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.