CVE-2026-19677
Authentication Bypass Leading to Server-Side Command Execution
- Published
- Oct 23, 2026
- Updated
- Oct 23, 2026
- Assigning CNA
- MON-CSIRT
- Evidence observed
- Sep 27, 2026
Primary CVSS
nvd · CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XLow · next 30 days
- Percentile
- 44.7%
- Model date
- Oct 25, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
An authentication bypass vulnerability in the public onPhase/ frevvo registration form version 11.0.14 allows an unauthenticated remote attacker to authenticate as an arbitrary tenant user, obtain TenantAdmin and Designer privileges, and execute arbitrary operating system commands via manipulation of registration parameters containing a valid tenant name and existing user identifier.
Sources
Exploit-Index : The Ultimate CVE Proof of Concept (PoC) & Exploit Database. A zero-API, high-performance aggregator for 0days, vulnerabilities, and Threat Intelligence. Replacing manual searches for elite SOC teams, DevSecOps, and Bug Bounty Hunters.
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