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CVE-2026-55255
CWE-639
High
76.5
RPSRPS range: 0–105; KEV-listed vulnerabilities can receive an exploitation amplifier.
Description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.1.
Source: NVD
Signals
- CVSS
- 8.4
- High · v3.1
- EPSS
- 0.88%
- Probability of exploitation in the next 30 days (FIRST)
- CISA KEV
- In CISA KEV since Jul 2026
- Fix commit
- Fix commit known
- Sources: MoreFixes, FreshFixes
- Weakness
- CWE-639
- Published
- 23 Jun 2026
- Last modified 8 Jul 2026
How to read these signals: RPS · EPSS · CISA KEV · Data sources
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Data as of 7 Oct 2026, 05:16 UK time