CVE-2026-76578

Full vulnerability record from the local CVENow database.
Description

A flaw was found in FreeIPA. The self-managed OTP token ACI does not require authentication and does not restrict which attributes may be added alongside the token entry. An unauthenticated LDAP client can exploit this, combined with a related flaw in the underlying directory server's ACI evaluation (tracked separately), to create an arbitrary attacker-controlled Kerberos principal and have it added to the administrators group. This allows a remote, unauthenticated attacker to obtain genuine FreeIPA administrator-group membership and perform administrative operations against the directory and, on SID-enabled deployments, other IdM services.
Severity
CRITICAL
CVSS score
9.8 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
[email protected]
Published
2026-09-07 13:20:36.850000
Last modified
2026-10-30 18:18:13.143000
View original CVE JSON
{
  "id": "CVE-2026-76578",
  "sourceIdentifier": "[email protected]",
  "published": "2026-09-07T13:20:36.850",
  "lastModified": "2026-10-30T18:18:13.143",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in FreeIPA. The self-managed OTP token ACI does not require authentication and does not restrict which attributes may be added alongside the token entry. An unauthenticated LDAP client can exploit this, combined with a related flaw in the underlying directory server's ACI evaluation (tracked separately), to create an arbitrary attacker-controlled Kerberos principal and have it added to the administrators group. This allows a remote, unauthenticated attacker to obtain genuine FreeIPA administrator-group membership and perform administrative operations against the directory and, on SID-enabled deployments, other IdM services."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
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          ],
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  ],
  "metrics": {
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      {
        "source": "[email protected]",
        "type": "Secondary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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              "exploitation": "none"
            },
            {
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            {
              "technicalImpact": "total"
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          "role": "CISA Coordinator",
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      "type": "Secondary",
      "description": [
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          "lang": "en",
          "value": "CWE-306"
        }
      ]
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    {
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      "source": "[email protected]"
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    {
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      "source": "[email protected]"
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    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519522",
      "source": "[email protected]"
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}