Security readout for executives and security teams
Plain-English summary
CVE-2026-0766 lets an authenticated attacker run code on an affected Open WebUI server. The issue is in tool module loading and could compromise confidentiality, integrity, and availability of the service. Public sources name Open WebUI 0.6.32 as affected; they do not state active exploitation.
Executive priority
Treat as high priority if Open WebUI 0.6.32 is in use. Although authentication is required, successful exploitation can become server-side code execution, creating material risk to application data, connected systems, and service availability.
Technical view
The flaw is a CWE-94 code injection issue in Open WebUI's load_tool_module_by_id function. A user-supplied string is not properly validated before being used to execute Python code. Exploitation requires authentication and runs code in the context of the service account. CVSS 3.0 score is 8.8.
Likely exposure
Organizations running Open WebUI 0.6.32 are the clearly identified exposure. Risk is higher where Open WebUI is reachable by many users or exposed beyond trusted networks. The provided sources do not confirm whether other versions are affected.
Exploitation context
Attackers need valid credentials, but no user interaction is required and network exploitation is rated low complexity. The source bundle does not cite CISA KEV listing, active exploitation, or public weaponized exploit availability.
Researcher notes
ZDI attributes this to ZDI-CAN-28257 and describes the vulnerable function as load_tool_module_by_id. The CVE record lists CWE-94 and CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Patch details are not present in the provided sources.
Mitigation direction
- Identify all Open WebUI deployments and confirm installed versions.
- Prioritize any instance running Open WebUI 0.6.32.
- Check Open WebUI vendor guidance for fixed versions or official workarounds.
- Restrict Open WebUI access to trusted users and networks.
- Run the service with least-privilege permissions.
- Review and limit who can manage or load tools.
Validation and detection
- Inventory Open WebUI hosts, containers, and managed deployments.
- Verify whether version 0.6.32 is present.
- Confirm Open WebUI is not unnecessarily internet-accessible.
- Review application logs for unusual tool or module loading activity.
- Check service account permissions and accessible secrets.
- Track vendor advisories for patch confirmation.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-0766 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.8HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ZDI-26-032CVE reference · x_research-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.