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DRUPAL-CORE-2021-008
No affected components available
Drupal's JSON:API and REST/File modules allow file uploads through their HTTP APIs. The modules do not correctly run all file validation, which causes an access bypass vulnerability. An attacker might be able to upload files that bypass the file validation process implemented by modules on the site.
This vulnerability is mitigated by three factors:
- The JSON:API or REST File upload modules must be enabled on the site.
- An attacker must have access to a file upload via JSON:API or REST.
- The site must employ a file validation module.
This advisory is not covered by Drupal Steward.
Also see GraphQL - Moderately critical - Access bypass - SA-CONTRIB-2021-029 which addresses a similar vulnerability for that module.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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