---
id: CVE-2025-66698
title: >-
  An issue in Semantic machines v5.4.8 allows attackers to bypass authentication
  via sending a crafted HTTP request to various API endpoints.
summary: >-
  An issue in Semantic machines v5.4.8 allows attackers to bypass authentication
  via sending a crafted HTTP request to various API endpoints.
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-287
vendor: semantic-machines
product: veda
affected:
  - veda = 5.4.8
published: '2026-01-13'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66698'
references:
  - url: 'https://github.com/Perunchess/CVE-2025-66698'
    label: cve@mitre.org
tags:
  - nvd
  - exploit-available
epss: 0.00491
epssPercentile: 0.41312
ingestedAt: '2026-07-06T16:44:34.510Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/Perunchess/CVE-2025-66698'
  checkedAt: '2026-09-23T07:13:43.921Z'
exploitAvailable: true
---

## Overview

An issue in Semantic machines v5.4.8 allows attackers to bypass authentication via sending a crafted HTTP request to various API endpoints.

## Affected

- `veda = 5.4.8`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.