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CVE-2026-48592 — oban_web

Fix: oban-bg/oban_web@ab3c5d1

CVE-2026-48592 is a CWE-862 vulnerability in oban_web. A fix is available for oban_web — see the affected versions and patch details below.

Missing authorization check on save-job event handler in oban_web

Also known asEEF-CVE-2026-48592GHSA-389x-rgxr-8m33
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-48592.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs43th percentile — riskier than 43% of all scored CVEsHighest risk
0.00%0.35%0.71%1.06%0.1%0.5%Jun 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected
💧oban_web

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Hex packages — download data is not available via public APIs for these ecosystems.

Description

Summary

oban_web 2.12.0 through the current unpatched release exposes a save-job LiveView event handler that performs no authorization check, allowing any authenticated user (including those with :read_only access) to overwrite a queued job's worker field with any other Oban.Worker module present in the application. On the job's next execution attempt, Oban dispatches perform/1 on the attacker-chosen module instead of the intended one.

Details

In lib/oban/web/live/jobs/detail_component.ex, the sibling event handlers for destructive actions all gate their side effects via can?/2 (cancel, delete, retry). The handle_event("save-job", params, socket) clause added in 2.12.0 has no equivalent guard. It builds a changes map from the client-supplied params (including worker, queue, priority, max_attempts, scheduled_at, tags, args) and unconditionally dispatches {:update_job, job, changes} to the parent LiveView, which writes the changes to the database.

The disabled attribute on the edit fieldset and button in the rendered HTML is advisory only. The Phoenix LiveView channel dispatches any phx-event pushed over the authenticated WebSocket regardless of what the DOM looks like, so the attacker pushes the event directly over the WebSocket without touching the UI.

The attacker is constrained to substituting an existing Oban.Worker module already loaded in the application (no code injection). The impact depends on what workers are available in the target application.

PoC

  1. Obtain an authenticated session with at minimum :read_only access to the Oban.Web dashboard.
  2. Open any job's detail panel to obtain its job ID.
  3. Push a forged save-job event over the LiveView WebSocket with "worker" set to the desired target module name.
  4. The server accepts the payload and updates the job row. On its next execution attempt, Oban invokes perform/1 on the attacker-chosen module.

Impact

CVSS 4.0 score 5.3 (Medium). Any application running oban_web >= 2.12.0 that exposes the dashboard to users with less than full job-management privileges is affected. The only precondition is an authenticated session with :read_only access or higher.

References

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💧Hexoban_web≥ 2.12.0&&< 2.12.52.12.5mix deps.update oban_web

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for oban_web, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update oban_web to 2.12.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-48592 is resolved across your whole dependency graph.

  3. Workarounds

    Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.

Frequently Asked Questions

### Summary `oban_web` 2.12.0 through the current unpatched release exposes a `save-job` LiveView event handler that performs no authorization check, allowing any authenticated user (including those with `:read_only` access) to overwrite a queued job's `worker` field with any other `Oban.Worker` module present in the application. On the job's next execution attempt, Oban dispatches `perform/1` on the attacker-chosen module instead of the intended one. ### Details In `lib/oban/web/live/jobs/detail_component.ex`, the sibling event handlers for destructive actions all gate their side effects v
O3 Security · Impact-Aware SCA

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CVE-2026-48592: oban_web RCE — Fixed in 2.12.5