CVE-2026-45346 json
Open WebUI: Stored Cross-Site Scripting in SVG Renderer
published 5mo ago modified 4mo ago also EUVD-2026-30651 , GHSA-r29h-37fj-x2w6
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 5%
- public exploits
- 0
- none known
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.31, there is a Cross-Site Scripting vulnerability in Open WebUI SVG renderer implementation. This vulnerability is fixed in 0.6.31.
Patch / fix
- npm open-webui 0.6.31
- openwebui open_webui 0.6.31
Is CVE-2026-45346 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-r29h-37fj-x2w6 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N |
| CNA | 4.0 | 5.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | open-webui | <0.6.31 |
0.6.31 |
Affected products
- open-webui open-webui
Classification
- Weakness
-
- CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page
References
-
github.com
/open-webui/open-webui/security/advisories/GHSA-r29h-37fj-x2w6
exploit, web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-45346
advisory
-
github.com
/open-webui/open-webui
package
Sources
- CVE List CVE-2026-45346
- GitHub Advisory GHSA-r29h-37fj-x2w6
- NVD CVE-2026-45346
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.