CVE-2025-3649Public exploitNetwork attack vector

Stored XSS via unchecked download link scheme

Published May 12, 2025 · Updated May 12, 2025

Stored XSS in Firelight LightPress Lightbox before 2.3.4 allows remote authenticated users to execute scripts through download links. The lightbox dialog turns an unchecked data-download attribute into its Download link without rejecting the javascript scheme. Contributor access permits planting the value, but execution requires a viewer to open the image dialog and click Download, exposing that viewer's WordPress session to script actions.

CVSS severity6.8
Medium
EPSS probability0.44%
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 Firelight LightPress Lightbox before 2.3.4 allows remote authenticated users to execute scripts through download links. The lightbox dialog turns an unchecked data-download attribute into its Download link without rejecting the javascript scheme. Contributor access permits planting the value, but execution requires a viewer to open the image dialog and click Download, exposing that viewer's WordPress session to script actions.

The record

CVE
CVE-2025-3649
Published
May 12, 2025
Updated
May 12, 2025
Vendor
Firelight
Product
LightPress Lightbox
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 12, 2025CVE publishedPublication date reported by the CVE source.
  2. May 12, 2025Record 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=0 <2.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Firelight · LightPress Lightboxversion=0 <2.3.4

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
6.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1204.001User Execution: Malicious Link

Public exploit references

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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