CVE-2024-48927Network attack vector

Backoffice script execution via direct SVG preview

Published Oct 22, 2024 · Updated Oct 22, 2024

Cross-site scripting in Umbraco CMS allows remote authenticated users to execute script by opening an uploaded SVG in full-screen Backoffice preview. The preview anchor navigates the browser directly to the SVG source instead of loading it as an image, allowing embedded SVG script to run in the Backoffice origin. The flaw affects 8.0.0 through 8.18.14, 10.0.0 through 10.8.6, and 13.0.0 through 13.5.1; a Backoffice account, media access, and preview interaction are required.

CVSS severity4.6

Medium

EPSS probability0.44%

Next 30 days · Sep 16, 2026

Known exploitationUnconfirmed

Based on sourced intelligence

Hinoki checkNot available

Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

The record

CVE: CVE-2024-48927
Published: Oct 22, 2024
Updated: Oct 22, 2024

Vendor: Umbraco
Product: Umbraco CMS
Classifications: CWE-79, CWE-74, T1203

Attack vector: network
Privileges: authenticated

Timeline

How it unfolded

Oct 22, 2024CVE publishedPublication date reported by the CVE source.
Oct 22, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

Affected versionversion=>= 10.0.0, < 10.8.7
Affected versionversion=10.0.0 <=10.8.7
Affected versionversion=>= 13.0.0, < 13.5.2
Affected versionversion=13.0.0 <=13.5.2
Affected versionversion=>= 8.0.0, < 8.18.15
Affected versionversion=8.0.0 <=8.18.15

What conditions does exploitation require?

Attack vectornetwork

Required privilegesauthenticated

What is affected?

Umbraco · Umbraco CMSversion=>= 10.0.0, < 10.8.7; version=10.0.0 <=10.8.7; version=>= 13.0.0, < 13.5.2; version=13.0.0 <=13.5.2; version=>= 8.0.0, < 8.18.15; version=8.0.0 <=8.18.15

Published CVSS scores

4.6National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

4.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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')

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo