What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-01 · updated 2026-07-01
• Weakness: CWE-79

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.

Affected products

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

References

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

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