CVE-2024-52794Network attack vector

Script execution via Magnific lightbox thumbnails

Published Dec 19, 2024 · Updated Dec 20, 2024

Cross-site scripting in Discourse's Magnific lightbox allows remote authenticated users to execute script when a user clicks a thumbnail. The vendor identifies the thumbnail lightbox as the affected locus but has not disclosed the untrusted field or incorrect rendering operation. A low-privileged account and a victim click are required; successful exploitation can alter page content, expose browser-accessible data, and disrupt the session.

CVSS severity6.8
Medium
EPSS probability0.28%
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

Cross-site scripting in Discourse's Magnific lightbox allows remote authenticated users to execute script when a user clicks a thumbnail. The vendor identifies the thumbnail lightbox as the affected locus but has not disclosed the untrusted field or incorrect rendering operation. A low-privileged account and a victim click are required; successful exploitation can alter page content, expose browser-accessible data, and disrupt the session.

The record

CVE
CVE-2024-52794
Published
Dec 19, 2024
Updated
Dec 20, 2024
Vendor
Discourse
Product
Discourse
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 20, 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.

  1. Affected versionversion=beta: <= 3.4.0.beta3
  2. Affected versionversion=stable: <= 3.3.2
  3. Affected versionversion=tests-passed: <= 3.4.0.beta3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Discourse · Discourseversion=beta: <= 3.4.0.beta3; version=stable: <= 3.3.2; version=tests-passed: <= 3.4.0.beta3

Published CVSS scores

6.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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.

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