What’s Vulnerable › Vulnerabilities

CVE-2026-47110: Tiptap for PHP < 2.1.1 DoS via Malformed href Attribute

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-24 · updated 2026-10-25
• Weakness: CWE-241

Description

Tiptap for PHP before version 2.1.1 contains an input validation vulnerability that allows authenticated attackers to cause a denial of service by submitting Tiptap JSON with the attrs.href field set to an array instead of a string, causing an unhandled TypeError in the Link::isAllowedUri() function when passed to preg_match(). Attackers can persist malformed JSON records that permanently crash the server-side HTML rendering pipeline for all subsequent viewers of that record until the database entry is manually repaired.

Affected products

• ueberdosis tiptap-php: before 2.1.1 — fixed in 2.1.1

How to fix

Upgrade to a fixed version: ueberdosis tiptap-php 2.1.1. Check the vendor advisory for mitigations.

References

• https://github.com/ueberdosis/tiptap-php/commit/74bfb7be1c8c6102b240f3879b7f984a6ab87b97
• https://github.com/ueberdosis/tiptap-php/pull/94
• https://github.com/ueberdosis/tiptap-php/releases/tag/2.1.1
• https://www.vulncheck.com/advisories/tiptap-for-php-dos-via-malformed-href-attribute

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