CVE-2026-3216Network attack vector

Authenticated SSRF via unsanitized image download URL

Published Mar 25, 2026 · Updated Mar 25, 2026

SSRF in Drupal Canvas before 1.1.1 allows remote authenticated users to make server-side image requests through crafted API messages. The Canvas AI image downloader insufficiently sanitizes user-controlled data in the messages JSON payload before fetching an image URL. Exploitation requires the disabled-by-default canvas_ai submodule and a role with the use Drupal Canvas AI permission, and exposes data reachable from the server.

CVSS severity5.0
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Drupal Canvas before 1.1.1 allows remote authenticated users to make server-side image requests through crafted API messages. The Canvas AI image downloader insufficiently sanitizes user-controlled data in the messages JSON payload before fetching an image URL. Exploitation requires the disabled-by-default canvas_ai submodule and a role with the use Drupal Canvas AI permission, and exposes data reachable from the server.

The record

CVE
CVE-2026-3216
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Avatar Uploader Project
Product
Drupal Canvas
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avatar Uploader Project · Drupal Canvasversion=0.0.0 <1.1.1

Published CVSS scores

5.0CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
5.0NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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