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TI-2026-82947 Aliases CVE-2026-118165GHSA-335m-jcx3-h636

Stored cross-site scripting in Firelight Lightbox WordPress plugin

Priority LOW 32CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

The Firelight Lightbox WordPress plugin before 2.3.23 does not escape link URLs in its Classic lightbox before inserting them into the page as HTML. This flaw (CWE-79) lets a user with a role as low as Contributor plant a crafted link that enables stored cross-site scripting against users who click it. An exploit link is listed in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

The Firelight Lightbox WordPress plugin before 2.3.23 does not escape the URL of links it opens in its Classic lightbox before inserting it into the page as HTML, which could allow users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks against users who click a crafted link.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00235 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Firelight Lightbox (Unknown): 2.3.23

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownFirelight Lightboxbefore 2.3.232.3.23Patch availableCNA
  • Firelight Lightbox VendorUnknown Affected before 2.3.23 Fixed in 2.3.23 Patch available CNA

Remediation

Update the Firelight Lightbox plugin to 2.3.23, which fixes the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA Firelight Lightbox (Unknown) Fixed in 2.3.23

Timeline

  1. 2026-10-30 Threatist record created from CVE-2026-118165
  2. 2026-10-30 Alias added: GHSA-335m-jcx3-h636
  3. 2026-10-30 CVSS score added · CISA ADP
  4. 2026-10-30 Weakness changed · CISA ADP
  5. 2026-10-30 CISA SSVC decision points changed

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences