CVE-2026-80348 TarsWeb through 3.0.16 Missing Authorization on Patch Deploy, Download and Delete Endpoints
Authenticated users can deploy, download, or delete arbitrary application packages on any managed server due to missing authorization checks in TarsWeb.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80348?
CVE-2026-80348 is a high-severity missing authorization vulnerability in TarsCloud TarsWeb, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
TarsWeb enforces its per-application roles by calling AuthService from individual controller methods, and four methods in app/controller/patch/PatchController.js make no such call. uploadAndPublish accepts a package upload and then builds and dispatches a deployment task to every server matching the supplied application and module name, while its sibling uploadPatchPackage, which only stores the package, does check developer authorization first. The only precondition uploadAndPublish enforces is that the named server is registered, and any registered server in the installation satisfies it. downloadPackage and deletePatchPackage select a package by an unscoped sequential primary key covering every application's uploads, and setPatchPackageDefault changes which package a given application deploys by default. Any authenticated account, including one holding a role scoped to a single unrelated application, can therefore push a package to and trigger its deployment on any server the console manages, retrieve or delete any other application's package, and change which package is deployed by default.
Weakness: CWE-862
Which versions are affected by CVE-2026-80348?
How do I fix CVE-2026-80348?
No fix has been published for CVE-2026-80348 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-80348 being exploited?
There is no known exploitation of CVE-2026-80348 in the wild and no public exploit code.
Sources
Also known as GHSA-h9c2-vjpc-cf5r.