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MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration

Type: advisorySources: OSV

MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.71, an unauthenticated attacker can register an arbitrary passkey and subsequently authenticate with it to obtain a full admin session. The application exposes passkey registration endpoints without requiring prior authentication. Any successfully authenticated passkey is automatically granted an administrator token, allowing full administrative access to the application. This enables a complete compromise of the application without requiring any existing credentials. Version 1.8.71 fixes the issue.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-33890
Confirmed fixed CVEs
Not specified
Updated in this feed
3 Nov 2026, 13:01 UTC · Revision 1

Source evidence

MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration

core-osv · Original source

Published 27 Mar 2026, 00:38 UTC

MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.71, an unauthenticated attacker can register an arbitrary passkey and subsequently authenticate with it to obtain a full admin session. The application exposes passkey registration endpoints without requiring prior authentication. Any successfully authenticated passkey is automatically granted an administrator token, allowing full administrative access to the application. This enables a complete compromise of the application without requiring any existing credentials. Version 1.8.71 fixes the issue.

osv:CVE-2026-33890
Complete source record
{
  "id": "66b3320dbecb3b5e15d3e53c8452efe33e7d8aec3fbd65cf7c75cc5fc54f30de",
  "url": "https://osv.dev/vulnerability/CVE-2026-33890",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "MyTube has an Unauthenticated Admin Privilege Escalation via Passkey Registration",
    "summary": "MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.71, an unauthenticated attacker can register an arbitrary passkey and subsequently authenticate with it to obtain a full admin session. The application exposes passkey registration endpoints without requiring prior authentication. Any successfully authenticated passkey is automatically granted an administrator token, allowing full administrative access to the application. This enables a complete compromise of the application without requiring any existing credentials. Version 1.8.71 fixes the issue.",
    "evidence": "osv:CVE-2026-33890",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-33890",
      "aliases": [
        "CVE-2026-33890",
        "GHSA-378w-xh68-qrc8"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/franklioxygen/mytube",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "941035909ee3f96a6f80f38acf70cbc3e66b5098"
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              "database_specific": {
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                    "range": [
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                        "introduced": "0"
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                        "fixed": "1.8.71"
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                    "source": "CPE_RANGE"
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      "modified": "2026-10-28T02:30:29.161563763Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33890.json",
        "https://github.com/franklioxygen/MyTube/security/advisories/GHSA-378w-xh68-qrc8",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-33890",
        "https://github.com/franklioxygen/MyTube/commit/d6c1275a7ff7ffd3d51b53c333237f4d572580ac"
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        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33890.json"
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    "related_cves": [
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        "value": "CVE-2026-33890",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 495635,
  "published_at": "2026-03-27T00:38:50.089+00:00"
}