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| Vulnerability ID | VCID-4rz6-hw32-jueb |
| Aliases |
CVE-2026-29070
GHSA-26gm-93rw-cchf |
| Summary | Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, an access control check is missing when deleting a file from a knowledge base. The only check being done is that the user has write access to the knowledge base (or is admin), but NOT that the file actually belongs to this knowledge base. It is thus possible to delete arbitrary files from arbitrary knowledge bases (as long as one knows the file id). Version 0.8.6 patches the issue. |
| Status | Published |
| Exploitability | None |
| Weighted Severity | None |
| Risk | None |
| Affected and Fixed Packages | Package Details |
| System | Score | Found at |
|---|---|---|
| epss | 0.00051 | https://api.first.org/data/v1/epss?cve=CVE-2026-29070 |
| cvssv3.1 | 5.4 | https://github.com/open-webui/open-webui |
| generic_textual | MODERATE | https://github.com/open-webui/open-webui |
| cvssv3.1 | 5.4 | https://github.com/open-webui/open-webui/blob/main/backend/open_webui/routers/knowledge.py#L803 |
| generic_textual | MODERATE | https://github.com/open-webui/open-webui/blob/main/backend/open_webui/routers/knowledge.py#L803 |
| cvssv3.1 | 5.4 | https://github.com/open-webui/open-webui/security/advisories/GHSA-26gm-93rw-cchf |
| generic_textual | MODERATE | https://github.com/open-webui/open-webui/security/advisories/GHSA-26gm-93rw-cchf |
| ssvc | Track | https://github.com/open-webui/open-webui/security/advisories/GHSA-26gm-93rw-cchf |
| cvssv3.1 | 5.4 | https://nvd.nist.gov/vuln/detail/CVE-2026-29070 |
| generic_textual | MODERATE | https://nvd.nist.gov/vuln/detail/CVE-2026-29070 |
| 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 |
| 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 | 0.16175 |
| EPSS Score | 0.00051 |
| Published At | June 11, 2026, 12:55 p.m. |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| 2026-06-11T16:46:55.321557+00:00 | Vulnrichment | Import | https://github.com/cisagov/vulnrichment/blob/develop/2026/29xxx/CVE-2026-29070.json | 38.6.0 |