Medium severity · published May 15, 2026
CVE-2026-45314
Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, the channel webhook create/update flow accepts arbitrary profile_image_url values, including data:image/svg+xml;base64,... payloads. The profile image endpoint then decodes and serves this SVG as image/svg+xml without sanitization, allowing attacker-controlled script handlers (for example onload) to execute when the profile-image URL is opened in the browser. This vulnerability is fixed in 0.9.3.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.9.3 · source: vendor
OW
Open Webui · Openwebui
before 0.9.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45314
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45314
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-3856-3vxq-m6fc
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