CVE-2026-47110 Tiptap for PHP < 2.1.1 DoS via Malformed href Attribute
Authenticated attackers can crash the server-side HTML rendering pipeline by submitting malformed JSON with an array in the href attribute.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-47110?
CVE-2026-47110 is a high-severity denial of service vulnerability in ueberdosis tiptap-php, published on 24 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-241
Which versions are affected by CVE-2026-47110?
2 open source packages ship an affected version, including ueberdosis/tiptap-php.
| Package | Affected | Fixed in |
|---|---|---|
ueberdosis/tiptap-php Packagist | All versions | 2.1.1 |
ueberdosis/tiptap-php Packagist | All versions | 2.1.1 |
How do I fix CVE-2026-47110?
Upgrade ueberdosis/tiptap-php to 2.1.1 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-47110 being exploited?
There is no known exploitation of CVE-2026-47110 in the wild and no public exploit code.
Sources
Also known as GHSA-4595-7fjw-r3jh.