Typo3 Backend XSS Vulnerability
Published 2 May 2022 · Updated 10 Sept 2026
Affected packages
- Affected
- >=3.3.0
- Fixed in
- No fix released
- Affected
- >=4.0 <4.0.12
- Fixed in
- 4.0.12
composer require typo3/cms:^4.0.12- Affected
- >=4.1.0 <4.1.10
- Fixed in
- 4.1.10
composer require typo3/cms:^4.1.10- Affected
- >=4.2.0 <4.2.6
- Fixed in
- 4.2.6
composer require typo3/cms:^4.2.6- Affected
- 4.3alpha1
- Fixed in
- No fix released
Details
An Information Disclosure vulnerability in jumpUrl mechanism, used to track access on web pages and provided files, allows a remote attacker to read arbitrary files on a host.
The expected value of a mandatory hash secret, intended to invalidate such requests, is exposed to remote users allowing them to bypass access control by providing the correct value.
There's no authentication required to exploit this vulnerability. The vulnerability allows to read any file, the web server user account has access to.
Is GHSA-jg55-3q6h-2ccf in any of your client repos?
Checking one package by hand is fine. Checking it across forty client projects is not. NPMscan reads the lockfiles in every GitHub repo you pick, finds each project with an affected typo3/cms, and gives you the command that fixes it.
References
Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.