GHSA-mvx4-532p-xfm9 is a low-severity (CVSS 3.1) CWE-285 vulnerability in open-webui. O3 Security confirms whether GHSA-mvx4-532p-xfm9 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Open WebUI: Scheduled automations continue after pending-user deactivation and stored model ACL revocation
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 GHSA-mvx4-532p-xfm9.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-mvx4-532p-xfm9 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 368,770 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
open-webuiReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Title: Scheduled automations continue after pending-user deactivation and stored model ACL revocation
Summary
Open WebUI documents pending as a zero-access role used for new sign-ups and deactivated users, and normal HTTP routes enforce that with get_verified_user() (which rejects pending), while automation create/update/run routes additionally require the features.automations permission. Two paths missed that lifecycle gate, so a deactivated (pending) account could keep acting through the background automation scheduler:
- Scheduler did not re-gate the owner. When a stored automation became due,
execute_automation()rehydrated the owner withUsers.get_user_by_id(...)and re-entered the chat completion pipeline without re-checking that the owner was stilluser/adminor still heldfeatures.automations. A still-active automation therefore kept running after its owner was deactivated. - Model ACL only enforced for exact role
user.check_model_access()applied private-model grants only whenuser.role == "user", so apendingprincipal fell through a branch that denies a normal non-owneruser.
Net effect: a deactivated account could continue scheduled chat generation through the background worker, consuming the operator's configured model-provider credentials and reaching a stored automation model ID that its current role/ACL state would no longer permit through normal routes.
Impact
A pending/deactivated account continues to execute due scheduled automations after its access has been revoked, consuming the operator's provider credentials, quota and shared capacity, and bypassing the private-model ACL for the automation's stored model ID. Exploitation requires a previously created active automation and a later transition to pending (deactivation or approval rollback), so it is bounded and not interactive. It does not grant unauthenticated access, account takeover, code execution, or cross-user data exfiltration.
Patched
In 0.10.0:
execute_automation()aborts and records an error unless the rehydrated owner is stilluseroradminand (for non-admins) still holdsfeatures.automations, so a deactivated or de-permissioned owner's due automation no longer runs.check_model_access()enforces model ACLs for every non-admin role rather than only the exact roleuser, so apendingor otherwise unrecognised role no longer falls through.
Credits
@rexpository
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | open-webui | ≥ 0.9.0&&< 0.10.0 | 0.10.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for open-webui. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update open-webui to 0.10.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-mvx4-532p-xfm9 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-mvx4-532p-xfm9 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-mvx4-532p-xfm9. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-mvx4-532p-xfm9 in your dependencies?
O3 detects GHSA-mvx4-532p-xfm9 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.