High
NiceGUI On Air authentication issue
Type: advisorySources: OSV
NiceGUI is an easy-to-use, Python-based UI framework. Prior to 2.9.1, authenticating with NiceGUI logged in the user for all browsers, including browsers in incognito mode. This vulnerability is fixed in 2.9.1.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-21618
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 04:33 UTC · Revision 1
Source evidence
NiceGUI is an easy-to-use, Python-based UI framework. Prior to 2.9.1, authenticating with NiceGUI logged in the user for all browsers, including browsers in incognito mode. This vulnerability is fixed in 2.9.1.
osv:CVE-2025-21618
Complete source record
{
"id": "15e337d83ed1acd94903cda4fbcbacdbdc3b730df06e33c39995d58b07f68caa",
"url": "https://osv.dev/vulnerability/CVE-2025-21618",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "NiceGUI On Air authentication issue",
"summary": "NiceGUI is an easy-to-use, Python-based UI framework. Prior to 2.9.1, authenticating with NiceGUI logged in the user for all browsers, including browsers in incognito mode. This vulnerability is fixed in 2.9.1.",
"evidence": "osv:CVE-2025-21618",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2025-21618",
"aliases": [
"CVE-2025-21618",
"GHSA-v6jv-p6r8-j78w",
"PYSEC-2026-1705"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/zauberzeug/nicegui",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "1621a4ba6a06676b8094362d36623551e651adc1"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "2.9.1"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
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}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
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{
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}
],
"source": "DESCRIPTION"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21618.json"
}
}
],
"modified": "2026-10-28T02:30:46.693060076Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21618.json",
"https://github.com/zauberzeug/nicegui/security/advisories/GHSA-v6jv-p6r8-j78w",
"https://nvd.nist.gov/vuln/detail/CVE-2025-21618",
"https://github.com/zauberzeug/nicegui/commit/1621a4ba6a06676b8094362d36623551e651adc1"
],
"provider_metadata": {
"cwe_ids": [
"CWE-287"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21618.json"
}
},
"related_cves": [
{
"value": "CVE-2025-21618",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 514624,
"published_at": "2025-01-06T16:30:11.349+00:00"
}