CVE-2026-45303
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.5, through the HTML rendering view, scripts can be injected and executed. The frontend provides a function to visualize the HTML content of a current chat. The content is embedded in an iFrame with the allow-scripts allow-forms allow-same-origin sandbox directive. This means that the content is placed in a sandbox but with permission to execute scripts and access the parent’s data (e.g., local storage). As a result, only a few functions are restricted (e.g., displaying an alert box), but in effect, the sandbox attribute is largely nullified. This vulnerability is fixed in 0.6.5.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
open-webuiPyPI | < 0.6.5 | 0.6.5 |
Affected products
2< 0.6.5+ 1 more
- (no CPE)range: < 0.6.5
- cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*range: <0.6.5
Patches
Vulnerability mechanics
References
3- github.com/open-webui/open-webui/security/advisories/GHSA-4vrc-m9ch-6m3rnvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-4vrc-m9ch-6m3rghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-45303ghsaADVISORY
News mentions
0No linked articles in our index yet.