TSPortal: Any user can forge self-deletion requests for any account
Impact
Conversion of empty strings to null allows disguising DPA reports as genuine self-deletion reports.
Source excerpt · OSVAffected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 30Ecosystem versions | 30 |
Version evidence: OSV · GHSA-gfhq-7499-f3f2
View original version evidence (29 explicit versions)
Original source description
Summary
Conversion of empty strings to null allows disguising DPA reports as genuine self-deletion reports.
Details
Creating a DPA report about another user and leaving the evidence field empty causes that report to look like the reported user self-requested deletion of their data. Ingenuine report is not distinguishable from a genuine one.
This can be prevented by disabling convertEmptyStringsToNull in the middleware, or by validating evidence in Http/Controllers/DPAController::store() to not be empty.
PoC
New DPA report -> Select "...someone who I suspect is under the age of 13" for the "The above username is..." field -> Add nothing to the "Evidence" field -> Submit
Impact
Potential unauthorized deletion of any arbitrary user's data both in the current system (TSPortal) and subsequent systems if actioned.
References
- Security advisory github.com/miraheze/TSPortal/security/advisories/GHSA-gfhq-7499-f3f2
- Security advisory nvd.nist.gov/vuln/detail/CVE-2026-29788
- Source reference api.laravel.com/docs/12.x/Illuminate/Foundation/Configuration/Middleware.html
- Source reference github.com/miraheze/TSPortal
- Source reference issue-tracker.miraheze.org/T15053