CVE-2026-119565

MEDIUM 4.3

Plausible Analytics through 3.2.1 Mass Assignment via Traffic Change Notification Update

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-915
Vendor	plausible
Product	plausible analytics
Published	Oct 30, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

Plausible / Plausible Analytics

0 ≤ 3.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Abraxas Labs