CVE-2026-3215Network attack vector

Authenticated script injection via unsanitized media URI

Published Mar 25, 2026 · Updated Mar 25, 2026

Cross-site scripting in Drupal Islandora before 2.17.5 allows remote authenticated users to inject script via crafted media URI paths. The custom media-attachment route processes URI path input without sufficient sanitization, enabling arbitrary file upload and script injection through crafted paths. Exploitation requires create-media permission and edit access to the node receiving the media, and successful script execution requires a user to render the affected content.

CVSS severity5.4
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Drupal Islandora before 2.17.5 allows remote authenticated users to inject script via crafted media URI paths. The custom media-attachment route processes URI path input without sufficient sanitization, enabling arbitrary file upload and script injection through crafted paths. Exploitation requires create-media permission and edit access to the node receiving the media, and successful script execution requires a user to render the affected content.

The record

CVE
CVE-2026-3215
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Avatar Uploader Project
Product
Islandora
Classifications
CWE-79, T1203
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 <2.17.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avatar Uploader Project · Islandoraversion=0.0.0 <2.17.5

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

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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