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vuln-cve/data/2026/25xxx/CVE-2026-25748.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-25748",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-02-05T18:35:52.356Z",
"datePublished": "2026-02-12T19:36:45.631Z",
"dateUpdated": "2026-02-17T15:53:01.301Z"
},
"containers": {
"cna": {
"title": "authentik has a forward authentication bypass with broken cookie",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"lang": "en",
"description": "CWE-287: Improper Authentication",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-fj56-5763-j8pp"
},
{
"name": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4"
},
{
"name": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4"
}
],
"affected": [
{
"vendor": "goauthentik",
"product": "authentik",
"versions": [
{
"version": ">= 2025.10.0-rc1, < 2025.10.4",
"status": "affected"
},
{
"version": ">= 2025.10.0-rc1, < 2025.12.4",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-02-12T19:36:45.631Z"
},
"descriptions": [
{
"lang": "en",
"value": "authentik is an open-source identity provider. Prior to 2025.10.4 and 2025.12.4, with a malformed cookie it was possible to bypass authentication when using forward authentication in the authentik Proxy Provider when used in conjunction with Traefik or Caddy as reverse proxy. When a malicious cookie was used, none of the authentik-specific X-Authentik-* headers were set which depending on application can grant access to an attacker. authentik 2025.10.4 and 2025.12.4 fix this issue."
}
],
"source": {
"advisory": "GHSA-fj56-5763-j8pp",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-02-17T15:52:54.989237Z",
"id": "CVE-2026-25748",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-02-17T15:53:01.301Z"
}
}
]
}
}