CVE-2026-48592 Missing authorization check on save-job event handler in oban_web
An authenticated read-only user can forge WebSocket events to overwrite job worker modules, leading to unauthorized code execution during job processing.
- 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-2026-48592?
CVE-2026-48592 is a medium-severity missing authorization vulnerability in oban-bg oban_web, published on 26 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing Authorization vulnerability in oban-bg oban_web ('Elixir.Oban.Web.Jobs.DetailComponent' modules) allows unauthorized job worker substitution.
The handle_event("save-job", ...) handler in 'Elixir.Oban.Web.Jobs.DetailComponent' does not perform an authorization check, unlike the sibling cancel, delete, and retry handlers which all verify the caller's privileges via can?/2. An authenticated user with :read_only access can push a forged save-job LiveView WebSocket event to overwrite a job's worker field with any other existing Oban.Worker module in the application. On the job's next execution attempt, Oban will invoke perform/1 on the attacker-chosen module instead of the intended one.
This issue affects oban_web: from 2.12.0 before 2.12.5.
Weakness: CWE-862
Which versions are affected by CVE-2026-48592?
3 open source packages ship an affected version, including oban_web.
| Package | Affected | Fixed in |
|---|---|---|
oban_web Hex | From 2.12.0 | 2.12.5 |
oban_web Hex | From 2.12.0 | 2.12.5 |
oban_web Hex | From 2.12.0 | 2.12.5 |
How do I fix CVE-2026-48592?
Upgrade oban_web to 2.12.5 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-48592 being exploited?
There is no known exploitation of CVE-2026-48592 in the wild and no public exploit code.
Sources
Also known as EEF-CVE-2026-48592, GHSA-389x-rgxr-8m33.