CVE-2022-3987Public exploitNetwork attack vector

Stored XSS via unescaped lightbox shortcode URL

Published Dec 19, 2022 · Updated Apr 17, 2025

Stored cross-site scripting in Responsive Lightbox2 before 1.0.4 allows remote authenticated users to execute script via a crafted shortcode. The lightbox2 shortcode outputs its crafted url attribute into page markup without validating or escaping the attribute value. Contributor access is sufficient to store the payload in a post, while execution requires another user to view or preview the post and move a pointer over the generated link.

CVSS severity5.4
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Responsive Lightbox2 before 1.0.4 allows remote authenticated users to execute script via a crafted shortcode. The lightbox2 shortcode outputs its crafted url attribute into page markup without validating or escaping the attribute value. Contributor access is sufficient to store the payload in a post, while execution requires another user to view or preview the post and move a pointer over the generated link.

The record

CVE
CVE-2022-3987
Published
Dec 19, 2022
Updated
Apr 17, 2025
Vendor
NoorsPlugin
Product
Responsive Lightbox2
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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 <1.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

NoorsPlugin · Responsive Lightbox2version=0 <1.0.4

Published CVSS scores

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

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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