CVE-2025-3662Public exploitNetwork attack vector

Unauthenticated stored XSS via unescaped image titles

Published Jun 3, 2025 · Updated Jun 3, 2025

Stored XSS in FancyBox for WordPress before 3.3.6 allows remote attackers to inject scripts through image title attributes. The gallery builder copies unescaped caption and title attribute values into caption fields that are later rendered as HTML. With public commenting enabled, remote attackers can store a crafted link in a comment; the script runs only after another user clicks that link.

CVSS severity7.2
High
EPSS probability0.25%
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 FancyBox for WordPress before 3.3.6 allows remote attackers to inject scripts through image title attributes. The gallery builder copies unescaped caption and title attribute values into caption fields that are later rendered as HTML. With public commenting enabled, remote attackers can store a crafted link in a comment; the script runs only after another user clicks that link.

The record

CVE
CVE-2025-3662
Published
Jun 3, 2025
Updated
Jun 3, 2025
Vendor
Colorlib
Product
FancyBox for WordPress
Classifications
CWE-79, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 2025Record 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 <3.3.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Colorlib · FancyBox for WordPressversion=0 <3.3.6

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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