What’s Vulnerable › Vulnerabilities

CVE-2026-119565: Plausible Analytics through 3.2.1 Mass Assignment via Traffic Change Notification Update

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-30 · updated 2026-10-30
• Weakness: CWE-915

Description

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 products

• PlausibleHQ Plausible Analytics (WordPress plugin): through 3.2.1

References

• https://abraxaslabs.tech/research/plausible-traffic-notify
• https://github.com/plausible/analytics
• https://github.com/plausible/analytics/blob/v3.2.1/lib/plausible/site/traffic_change_notification.ex#L21
• https://github.com/plausible/analytics/blob/v3.2.1/lib/plausible_web/controllers/site_controller.ex#L481-L494
• https://www.vulncheck.com/advisories/plausible-analytics-through-3.2.1-mass-assignment-via-traffic-change-notification-update

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