CVE-2024-5878Network attack vector

Stored script execution via unescaped lightbox attributes

Published May 20, 2025 · Updated Apr 8, 2026

Stored XSS in NextGEN Gallery 3.59.4 and earlier and SimpleLightbox 2.14.4 and earlier allows remote authenticated users to inject scripts. The bundled SimpleLightbox 2.1.5 code inserts user-supplied attributes into generated DOM content without sufficient sanitization or output escaping. Contributor-level access is required to store a payload in a page, and the script executes in the browser whenever that page is accessed.

CVSS severity6.4
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in NextGEN Gallery 3.59.4 and earlier and SimpleLightbox 2.14.4 and earlier allows remote authenticated users to inject scripts. The bundled SimpleLightbox 2.1.5 code inserts user-supplied attributes into generated DOM content without sufficient sanitization or output escaping. Contributor-level access is required to store a payload in a page, and the script executes in the browser whenever that page is accessed.

The record

CVE
CVE-2024-5878
Published
May 20, 2025
Updated
Apr 8, 2026
Vendor
Sandhills Development, LLC
Product
NextGEN Gallery
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.59.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Sandhills Development, LLC · NextGEN Galleryversion=0 <=3.59.4
Andre Rinas · SimpleLightboxversion=0 <=2.14.4

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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

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Your stack

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