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Stored XSS in Page Builder by SiteOrigin via panels_info.class

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 Page Builder by SiteOrigin WordPress plugin before 2.38.0 does not sanitize or escape a widget property before storing and outputting it in the page builder interface, tracked as CWE-79. An attacker with the contributor role or above can store a script that runs against higher-privileged users who open the affected post in the editor. An exploit link is listed in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

The Page Builder by SiteOrigin WordPress plugin before 2.38.0 does not sanitize or escape a widget property before storing it and outputting it in the page builder interface, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks against higher-privileged users who open the affected post in the editor.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00317 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Page Builder by SiteOrigin (Unknown): 2.38.0

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
UnknownPage Builder by SiteOriginbefore 2.38.02.38.0Patch availableCNA
  • Page Builder by SiteOrigin VendorUnknown Affected before 2.38.0 Fixed in 2.38.0 Patch available CNA

Remediation

Update Page Builder by SiteOrigin to version 2.38.0.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Page Builder by SiteOrigin (Unknown) Fixed in 2.38.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Page Builder by SiteOrigin 2.38.0

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-81696 Page Builder by SiteOrigin: Contributor+ Reads Private Posts via Loop WidgetPriority LOW 13

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-110506
  2. 2026-10-28 Alias added: GHSA-mc48-45x9-jh54
  3. 2026-10-28 CVSS score added · CISA ADP
  4. 2026-10-28 Weakness changed · CISA ADP
  5. 2026-10-28 CISA SSVC decision points changed

References

Sources