High
Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-45314
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 09:38 UTC · Revision 1
Source evidence
Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image
core-osv · Original sourcePublished 15 May 2026, 21:31 UTC
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.
osv:CVE-2026-45314
Complete source record
{
"id": "998b2a7d27988c7840a831b7abe1ee321a4a5467808f08dacb83a4a22f59d13a",
"url": "https://osv.dev/vulnerability/CVE-2026-45314",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Open WebUI: XSS via SVG in /api/v1/channels/webhooks/{webhook_id}/profile/image",
"summary": "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.",
"evidence": "osv:CVE-2026-45314",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-45314",
"aliases": [
"CVE-2026-45314",
"GHSA-3856-3vxq-m6fc",
"PYSEC-2026-2694"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
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"type": "GIT",
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"strategy": "StringRangeExpression"
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"database_specific": {
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}
}
],
"modified": "2026-10-28T02:30:50.596723738Z",
"provider": "osv",
"references": [
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"https://github.com/open-webui/open-webui/security/advisories/GHSA-3856-3vxq-m6fc",
"https://nvd.nist.gov/vuln/detail/CVE-2026-45314"
],
"provider_metadata": {
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],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45314.json"
}
},
"related_cves": [
{
"value": "CVE-2026-45314",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518893,
"published_at": "2026-05-15T21:31:24.526+00:00"
}