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advisory-database[bot]advisory-database[bot]
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Publish Advisories
GHSA-2gw9-c2r2-f5qf GHSA-7ccv-rp6m-rffr
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‎advisories/github-reviewed/2026/04/GHSA-2gw9-c2r2-f5qf/GHSA-2gw9-c2r2-f5qf.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-2gw9-c2r2-f5qf",
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"modified": "2026-04-21T17:24:42Z",
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"published": "2026-04-21T17:24:42Z",
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"aliases": [
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"CVE-2026-39386"
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],
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"summary": "Neko has a Self-service Privilege Escalation for Authenticated Users",
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"details": "### Impact\n\nAny authenticated user can immediately obtain full administrative control of the entire Neko instance (member management, room settings, broadcast control, session termination, etc.). This results in a complete compromise of the instance.\n\n### Patches\n\nThe vulnerability has been patched in the following releases:\n\n- [v3.0.11](https://github.com/m1k1o/neko/releases/tag/v3.0.11) (backport release)\n- [v3.1.2](https://github.com/m1k1o/neko/releases/tag/v3.1.2) (latest stable release)\n\nUsers should upgrade to [v3.0.11](https://github.com/m1k1o/neko/releases/tag/v3.0.11) or later (for the 3.0 branch) or [v3.1.2](https://github.com/m1k1o/neko/releases/tag/v3.1.2) or later.\n\n### Workarounds\n\nIf upgrading is not immediately possible, the following mitigations can reduce risk:\n\n- Restrict access to trusted users only (avoid granting accounts to untrusted parties)\n- Run the instance only when needed; avoid leaving it continuously exposed\n- Disable or restrict access to the `/api/profile` endpoint if feasible\n- Monitor for suspicious privilege changes or unexpected administrative actions\n\nNote: These are temporary mitigations and do not fully eliminate the vulnerability. Upgrading is strongly recommended.\n\n### Credits\nNeko thanks @blitzkrieg-patch for responsibly disclosing this vulnerability and reaching out directly. This contribution helped strengthen the project, and the whole community benefits from it.",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/m1k1o/neko/server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "3.0.0"
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},
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{
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"fixed": "3.0.11"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/m1k1o/neko/server"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.0.0-20250322225643-212bf8a60756"
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},
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{
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"fixed": "0.0.0-20260406184107-c54bcf1ee211"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "WEB",
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"url": "https://github.com/m1k1o/neko/security/advisories/GHSA-2gw9-c2r2-f5qf"
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},
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{
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"type": "ADVISORY",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39386"
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},
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{
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"type": "WEB",
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"url": "https://github.com/m1k1o/neko/commit/6b561feb9016badea99ae7305091c0ff55e1d114"
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},
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{
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"type": "WEB",
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"url": "https://github.com/m1k1o/neko/commit/c54bcf1ee211e28104a2bb6db59583a39c4a4d6e"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/m1k1o/neko"
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},
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{
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"type": "WEB",
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"url": "https://github.com/m1k1o/neko/releases/tag/v3.0.11"
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},
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{
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"type": "WEB",
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"url": "https://github.com/m1k1o/neko/releases/tag/v3.1.2"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-20",
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"CWE-269",
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"CWE-284",
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"CWE-639",
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"CWE-862"
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],
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"severity": "HIGH",
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"github_reviewed": true,
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"github_reviewed_at": "2026-04-21T17:24:42Z",
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"nvd_published_at": "2026-04-21T01:16:06Z"
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}
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}

‎advisories/github-reviewed/2026/04/GHSA-7ccv-rp6m-rffr/GHSA-7ccv-rp6m-rffr.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-7ccv-rp6m-rffr",
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"modified": "2026-04-21T17:26:42Z",
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"published": "2026-04-21T17:26:42Z",
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"aliases": [
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"CVE-2026-39388"
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],
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"summary": "OpenBao's Certificate Authentication Allows Token Renewal With Different Certificate",
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"details": "### Background\n\nOpenBao's Certificate authentication method, when a token renewal is requested and `disable_binding=true` is set, attempts to verify the current request's presented mTLS certificate matches the original. Token renewals for other authentication methods do not require any supplied login information.\n\n### Impact\n\nDue to incorrect matching, the certificate authentication method would allow renewal of tokens for which the attacker had a sibling certificate+key signed by the same CA, but which did not necessarily match the original role or the originally supplied certificate. This implies an attacker could still authenticate to OpenBao in a similar scope, however, token renewal implies that an attacker may be able to extend the lifetime of dynamic leases held by the original token. This attack requires knowledge of either the original token or its accessor. \n\nThis vulnerability is originally from HashiCorp Vault.\n\n### Patches\n\nThis has been addressed in v2.5.3.\n\n### Workarounds\n\nEnsure privileged roles are tightly scoped to single certificates.",
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"severity": [
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{
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"type": "CVSS_V4",
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"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "Go",
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"name": "github.com/openbao/openbao"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "0.0.0-20260420160924-abe84e1af4c3"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "WEB",
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"url": "https://github.com/openbao/openbao/security/advisories/GHSA-7ccv-rp6m-rffr"
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},
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{
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"type": "ADVISORY",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39388"
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},
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{
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"type": "WEB",
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"url": "https://github.com/openbao/openbao/pull/2932"
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},
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{
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"type": "WEB",
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"url": "https://github.com/openbao/openbao/commit/9ab7a066826cc544c30e8b203f8f472076f366e1"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/openbao/openbao"
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},
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{
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"type": "WEB",
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"url": "https://github.com/openbao/openbao/releases/tag/v2.5.3"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-295",
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"CWE-863"
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],
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"severity": "LOW",
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"github_reviewed": true,
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"github_reviewed_at": "2026-04-21T17:26:42Z",
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"nvd_published_at": "2026-04-21T01:16:06Z"
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}
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}

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