CVE-2026-119565

medium

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.

References

https://www.vulncheck.com/advisories/plausible-analytics-through-3.2.1-mass-assignment-via-traffic-change-notification-update

https://github.com/plausible/analytics/blob/v3.2.1/lib/plausible_web/controllers/site_controller.ex#L481-L494

https://github.com/plausible/analytics/blob/v3.2.1/lib/plausible/site/traffic_change_notification.ex#L21

https://github.com/plausible/analytics

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-113830

https://abraxaslabs.tech/research/plausible-traffic-notify

Details

Source: Mitre, NVD

Published: 2026-10-30

Updated: 2026-10-30

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00309