CVE-2026-47110: Ueberdosis/tiptap php Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-4595-7fjw-r3jh
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CVSS 6.5
CWE-241
Published
Advisory Summary

CVE-2026-47110 is a HIGH (CVSS 6.5) denial of service vulnerability (CWE-241: Improper Handling of Unexpected Data Type) affecting Ueberdosis/tiptap php libraries in the Packagist ecosystem. The issue involves tiptap contains an input validation vulnerability resulting in dos. Remediation is available by upgrading affected packages to version 2.1.1.

CVE-2026-47110 at a Glance

CVE Identifier CVE-2026-47110
GHSA Identifier GHSA-4595-7fjw-r3jh
Severity HIGH
CVSS v3.1 Base Score 6.5
CWE Classification CWE-241: Improper Handling of Unexpected Data Type
Affected Product Ueberdosis/tiptap php
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-47110

To remediate this vulnerability, upgrade all affected Ueberdosis/tiptap php dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ueberdosis/tiptap-php fixed: 2.1.1 
Upgrade ueberdosis/tiptap-php to 2.1.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for ueberdosis/tiptap-php

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-47110, inspect your project dependencies for Ueberdosis/tiptap php:

inspect dependencies for ueberdosis/tiptap-php

Analyze the terminal output to locate any version of Ueberdosis/tiptap php in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.1.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-241: Improper Handling of Unexpected Data Type, where 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). In Ueberdosis/tiptap php, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-47110 Affected Ueberdosis/tiptap php Versions

1 component(s)
Fixed Versions:
2.1.1
Product / Package Ecosystem Affected Versions Fixed Version
ueberdosis/tiptap-php
 Packagist
< 2.1.1
2.1.1

References

NVD — CVE-2026-47110 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47110
Ueberdosis/tiptap php Source Repository REPOSITORY
https://github.com/ueberdosis/tiptap-php/pull/94
Security Fix Commit FIX COMMIT
https://github.com/ueberdosis/tiptap-php/commit/74bfb7be1c8c6102b240f3879b7f984a6ab87b97
Ueberdosis/tiptap php Source Repository REPOSITORY
https://github.com/ueberdosis/tiptap-php
Ueberdosis/tiptap php Release RELEASE
https://github.com/ueberdosis/tiptap-php/releases/tag/2.1.1
www.vulncheck.com/advisories/tiptap-f... WEB
https://www.vulncheck.com/advisories/tiptap-for-php-dos-via-malformed-href-attribute

Frequently Asked Questions

What is CVE-2026-47110?
CVE-2026-47110 is a security vulnerability in Ueberdosis/tiptap php involving Tiptap contains an input validation vulnerability resulting in DoS under CWE-241: Improper Handling of Unexpected Data Type.
Which Ueberdosis/tiptap php versions are affected?
Affected versions include releases prior to 2.1.1 across affected packages: ueberdosis/tiptap-php.
What version fixes CVE-2026-47110?
Upgrading to 2.1.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ueberdosis/tiptap-php affected?
Yes, ueberdosis/tiptap-php is affected in releases prior to 2.1.1. Upgrade your dependency to 2.1.1 or later.
What is the CVSS score of CVE-2026-47110?
CVE-2026-47110 has a CVSS v3.1 base score of 6.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-47110?
CVE-2026-47110 is classified under CWE-241: Improper Handling of Unexpected Data Type (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).).
How can I check Packagist dependencies for CVE-2026-47110?
Run the dependency tree command: 'inspect dependencies for ueberdosis/tiptap-php'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4595-7fjw-r3jh",
  "modified" : "2026-10-07T14:01:58Z",
  "published" : "2026-06-25T00:33:22Z",
  "aliases" : [ "CVE-2026-47110" ],
  "summary" : "Tiptap contains an input validation vulnerability resulting in DoS",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ueberdosis/tiptap-php"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.1.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-47110"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ueberdosis/tiptap-php/pull/94"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ueberdosis/tiptap-php/commit/74bfb7be1c8c6102b240f3879b7f984a6ab87b97"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ueberdosis/tiptap-php"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ueberdosis/tiptap-php/releases/tag/2.1.1"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/tiptap-for-php-dos-via-malformed-href-attribute"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-241" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-07T14:01:58Z",
    "nvd_published_at" : "2026-06-24T22:16:47Z"
  }
}