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| Vulnerability ID | VCID-n4ma-zcpv-5fbp |
| Aliases |
CVE-2026-44562
GHSA-mqq6-cqcx-38vg |
| Summary | Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/models/import endpoint allows users with the workspace.models_import permission to overwrite any existing model in the database, regardless of ownership. When an imported model's ID matches an existing model, the endpoint merges the attacker's payload over the existing model data and writes it to the database with no ownership or access grant validation. Additionally, filter_allowed_access_grants is never called, bypassing the access grant restrictions enforced on all other model mutation endpoints. This vulnerability is fixed in 0.9.0. |
| Status | Published |
| Exploitability | None |
| Weighted Severity | None |
| Risk | None |
| Affected and Fixed Packages | Package Details |
| System | Score | Found at |
|---|---|---|
| epss | 0.00011 | https://api.first.org/data/v1/epss?cve=CVE-2026-44562 |
| cvssv3.1 | 6.5 | https://github.com/open-webui/open-webui |
| generic_textual | MODERATE | https://github.com/open-webui/open-webui |
| cvssv3.1 | 6.5 | https://github.com/open-webui/open-webui/security/advisories/GHSA-mqq6-cqcx-38vg |
| generic_textual | MODERATE | https://github.com/open-webui/open-webui/security/advisories/GHSA-mqq6-cqcx-38vg |
| ssvc | Track | https://github.com/open-webui/open-webui/security/advisories/GHSA-mqq6-cqcx-38vg |
| cvssv3.1 | 6.5 | https://nvd.nist.gov/vuln/detail/CVE-2026-44562 |
| generic_textual | MODERATE | https://nvd.nist.gov/vuln/detail/CVE-2026-44562 |
| Reference id | Reference type | URL |
|---|---|---|
| https://api.first.org/data/v1/epss?cve=CVE-2026-44562 | ||
| https://github.com/open-webui/open-webui | ||
| https://nvd.nist.gov/vuln/detail/CVE-2026-44562 | ||
| GHSA-mqq6-cqcx-38vg | https://github.com/advisories/GHSA-mqq6-cqcx-38vg | |
| GHSA-mqq6-cqcx-38vg | https://github.com/open-webui/open-webui/security/advisories/GHSA-mqq6-cqcx-38vg |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.01311 |
| EPSS Score | 0.00011 |
| Published At | June 11, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-06-11T16:42:38.490622+00:00 | Vulnrichment | Import | https://github.com/cisagov/vulnrichment/blob/develop/2026/44xxx/CVE-2026-44562.json | 38.6.0 |