Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

Skip to content
cve.new Create a CVE report
Check your stack
CVE-2026-119565medium5.3

Plausible Analytics through 3.2.1 Mass Assignment via Traffic Change Notification Update

Impact

Plausible Analytics through version 3.2.1 has a mass assignment vulnerability, allowing authenticated site editors to reassign traffic change notifications. This is done by submitting a site_id parameter via a PUT request. The impact is that attackers can receive another site's traffic alerts and visitor figures.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Plausible · VulnCheck

Plausible Analytics

1 range
VulnCheck version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → through 3.2.1

semver versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119565

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-915 ↗

Improperly Controlled Modification of Dynamically-Determined Object Attributes

VulnCheck

Related →
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes
  1. CVE · CVE-2026-119565

    Observed 2026-10-30T17:27:07.556Z · upstream updated 2026-10-30T16:20:23.056Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-30T16:20:12.560587Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

5 sources
github.com/plausible/analytics/blob/v3.2.1/lib/plausible/site/traffic_change_notification.ex
technical-descriptionVulnCheck
github.com/plausible/analytics/blob/v3.2.1/lib/plausible_web/controllers/site_controller.ex
technical-descriptionVulnCheck
abraxaslabs.tech/research/plausible-traffic-notify
third-party-advisoryVulnCheck
github.com/plausible/analytics
productVulnCheck
www.vulncheck.com/advisories/plausible-analytics-through-3.2.1-mass-assignment-via-traffic-change-notification-update
third-party-advisoryVulnCheck