---
id: CVE-2026-119565
title: >-
  Plausible Analytics through 3.2.1 Mass Assignment via Traffic Change
  Notification Update
summary: >-
  Plausible Analytics through 3.2.1 contains a mass assignment vulnerability in
  update_traffic_change_notification that allows authenticated site editors to
  reassign notifications by supplying a site_id parameter. Attackers can submit
  traf…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-915
vendor: Plausible
product: Plausible Analytics
affected:
  - analytics <= 3.2.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-30T16:20:12.560587Z'
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T16:20:23.056Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119565'
references:
  - url: >-
      https://github.com/plausible/analytics/blob/v3.2.1/lib/plausible/site/traffic_change_notification.ex#L21
  - url: >-
      https://github.com/plausible/analytics/blob/v3.2.1/lib/plausible_web/controllers/site_controller.ex#L481-L494
  - url: 'https://abraxaslabs.tech/research/plausible-traffic-notify'
  - url: 'https://github.com/plausible/analytics'
  - url: >-
      https://www.vulncheck.com/advisories/plausible-analytics-through-3.2.1-mass-assignment-via-traffic-change-notification-update
    label: >-
      VulnCheck Advisory: Plausible Analytics through 3.2.1 Mass Assignment via
      Traffic Change Notification Update
tags:
  - cve.org
epss: 0.00309
epssPercentile: 0.23883
ingestedAt: '2026-11-05T16:24:31.073Z'
---

## Overview

Plausible Analytics through 3.2.1 contains a mass assignment vulnerability in update_traffic_change_notification that allows authenticated site editors to reassign notifications by supplying a site_id parameter. Attackers can submit traffic_change_notification[site_id] set to another site's primary key via PUT /sites/:domain/traffic-change-notification/:type to receive that site's traffic alerts and visitor figures.

## Affected

- `analytics <= 3.2.1`

## Remediation

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