CVE detail
CVE-2026-55255: Langflow Authorization Bypass Through User-Controlled Key Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
Langflow · Langflow
- Date added (KEV)
- Jul 07, 2026
- CISA due date
- Jul 10, 2026
- Ransomware campaign use
- Unknown
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor fix: Vendor mitigation
Scorifya interpretation
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Plain English
Technical detail
From CISA
Langflow contains an authorization bypass through user-controlled key vulnerability which allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request.
https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-55255
See what attackers can see on your domain
This vulnerability is on CISA's Known Exploited Vulnerabilities list, so it is being exploited in the wild right now. Scorifya can't test for Langflow directly, but in about 30 seconds it shows what your own domain exposes publicly across TLS, security headers, DNS, and cookies: the surface attackers probe first.
SOC 2 compliance
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See Scorifya Controls →References
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2ExploitMitigationVendor Advisory
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2ExploitMitigationVendor Advisory
- https://github.com/langflow-ai/langflow/pull/12832Issue TrackingPatch
- https://webflow.sysdig.com/blog/understanding-langflow-cve-2026-55255-and-why-higher-cvss-vulnerabilities-arent-always-the-most-exploited
Other recent CVEs from Langflow
- CVE-2025-34291Langflow, Langflow Origin Validation Error Vulnerability
- CVE-2026-33017Langflow, Langflow Code Injection Vulnerability
- CVE-2025-3248Langflow, Langflow Missing Authentication Vulnerability