CVE-2025-5035Public exploitNetwork attack vector

Stored XSS via unescaped link title attributes

Published Jun 27, 2025 · Updated Jun 27, 2025

Stored XSS in Firelight Lightbox before 2.3.16 allows remote authenticated users to inject scripts through crafted post links. When jQuery Metadata is enabled, the plugin outputs an untrusted link title attribute without sanitization or escaping. Contributor-level access is sufficient, and the script runs after another user opens the post and clicks the crafted link.

CVSS severity5.4
Medium
EPSS probability0.19%
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 Lightbox before 2.3.16 allows remote authenticated users to inject scripts through crafted post links. When jQuery Metadata is enabled, the plugin outputs an untrusted link title attribute without sanitization or escaping. Contributor-level access is sufficient, and the script runs after another user opens the post and clicks the crafted link.

The record

CVE
CVE-2025-5035
Published
Jun 27, 2025
Updated
Jun 27, 2025
Vendor
Firelight
Product
Firelight Lightbox
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 27, 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 <2.3.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Firelight · Firelight Lightboxversion=0 <2.3.16

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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 exploitPublished

Weakness, pattern, technique

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

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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