Critical
freeipa — security advisory
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.
- Products
- freeipa
- Affected versions
- 3.2.1-0ubuntu1, 3.3.4-0ubuntu1, 3.3.4-0ubuntu2, 3.3.4-0ubuntu3, 3.3.4-0ubuntu3.1, 3.3.4-0ubuntu3.1+esm1, 4.1.4-1, 4.10.2-1, 4.10.2-2, 4.10.2-2ubuntu3, 4.11.1-1, 4.11.1-2, 4.12.4-1, 4.12.4-2, 4.13.1-1, 4.13.1-1build1, 4.3.1-0ubuntu1, 4.3.1-0ubuntu1+esm1, 4.4.4-3ubuntu1, 4.4.4-4, 4.7.0~pre1+git20180411-2ubuntu1, 4.7.0~pre1+git20180411-2ubuntu2, 4.8.1-2ubuntu1, 4.8.3-1, 4.8.6-1ubuntu2, 4.8.6-1ubuntu6, 4.8.6-1ubuntu8, 4.8.6-1ubuntu9, 4.9.8-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-76578
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:18 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-76578
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
freeipa
Fixed versions: Not specified
Complete source record
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"id": "101fcace21af5ba560b92cfdbc1f09025dcbc4dd078c50738b0c0cb700978709",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-76578",
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],
"modified": "2026-10-17T13:01:06.901078413Z",
"provider": "osv",
"upstream": [
"CVE-2026-76578"
],
"references": [
"https://ubuntu.com/security/CVE-2026-76578",
"https://www.cve.org/CVERecord?id=CVE-2026-76578",
"https://bugzilla.redhat.com/show_bug.cgi?id=2519522"
]
},
"related_cves": [
{
"value": "CVE-2026-76578",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361003,
"published_at": "2026-09-07T13:20:00+00:00"
}