CVE-2026-47110

Deferred Deferred - Pending Action

Tiptap PHP JSON Input Validation Flaw Leads to DoS

Publication date: 2026-06-24

Last updated on: 2026-07-14

Assigner: VulnCheck

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-24

Last Modified

2026-07-14

Generated

2026-07-15

AI Q&A

2026-06-25

EPSS Evaluated

2026-07-13

NVD

CVE-2026-47110

EUVD

EUVD-2026-39100

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-241	The product does not handle or incorrectly handles when a particular element is not the expected type, e.g. it expects a digit (0-9) but is provided with a letter (A-Z).

Attack-Flow Graph

Executive Summary

This vulnerability exists in Tiptap for PHP versions before 2.1.1 and involves improper input validation. Authenticated attackers can submit Tiptap JSON data where the attrs.href field is an array instead of the expected string. This malformed input causes an unhandled TypeError in the Link::isAllowedUri() function when it tries to process the data using preg_match().

As a result, the server-side HTML rendering pipeline crashes permanently for all users viewing that record until the database entry is manually fixed.

Impact Analysis

The main impact of this vulnerability is a denial of service (DoS). Attackers who are authenticated can cause the server to crash its HTML rendering process by submitting malformed JSON data. This crash affects all subsequent viewers of the affected record, potentially disrupting service availability until the database entry is manually repaired.

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