High
dogtag-pki — security advisory
A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSL_CLIENT_CERT session attribute retains the EST subsystem's agent certificate, which causes downstream authorization checks to treat the request as agent-privileged. An authenticated EST user can exploit this to obtain CA-signed certificates with arbitrary subject names.
- Products
- dogtag-pki
- Affected versions
- 10.10.2-3build1, 10.2.6+git20160317-1, 10.2.6+git20160317-1ubuntu0.1~esm1, 10.2.6-1, 10.2.6-2, 10.2.6-3, 10.3.5+12-4ubuntu1, 10.3.5+12-5, 10.5.3-3, 10.5.3-4, 10.5.5-1, 10.6.0-1ubuntu1, 10.6.0-1ubuntu2, 10.6.0-1ubuntu2+esm1, 10.6.0~beta2-3, 10.7.3-4, 10.8.3-1ubuntu1, 10.8.3-1ubuntu1+esm1, 11.0.0-1, 11.0.0-1ubuntu0.1~esm1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-104988
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 09:03 UTC · Revision 1
Source evidence
A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSL_CLIENT_CERT session attribute retains the EST subsystem's agent certificate, which causes downstream authorization checks to treat the request as agent-privileged. An authenticated EST user can exploit this to obtain CA-signed certificates with arbitrary subject names.
osv:UBUNTU-CVE-2026-104988
dogtag-pki
Fixed versions: Not specified
dogtag-pki
Fixed versions: Not specified
dogtag-pki
Fixed versions: Not specified
dogtag-pki
Fixed versions: Not specified
Complete source record
{
"id": "987a7d8cbdafa25f88c02938eec3dfe13cb4ac3b9a5df43a0a748a495a575038",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-104988",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-104988",
"summary": "A flaw was found in Dogtag PKI (pki-core). The CMCAuthForEST authentication plugin fails open when an EST fullcmc enrollment request is submitted via BasicAuth without an end-user TLS client certificate. The SSL_CLIENT_CERT session attribute retains the EST subsystem's agent certificate, which causes downstream authorization checks to treat the request as agent-privileged. An authenticated EST user can exploit this to obtain CA-signed certificates with arbitrary subject names.",
"evidence": "osv:UBUNTU-CVE-2026-104988",
"products": [
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{
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{
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{
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],
"severity": "high",
"structured": {
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"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
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"affected": [
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{
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{
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{
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},
{
"binary_name": "pki-kra",
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},
{
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},
{
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"binary_version": "10.2.6+git20160317-1ubuntu0.1~esm1"
},
{
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},
{
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},
{
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"ecosystem": "Ubuntu:Pro:18.04:LTS"
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},
{
"binary_name": "pki-javadoc",
"binary_version": "11.0.0-1ubuntu0.1~esm1"
},
{
"binary_name": "pki-kra",
"binary_version": "11.0.0-1ubuntu0.1~esm1"
},
{
"binary_name": "pki-ocsp",
"binary_version": "11.0.0-1ubuntu0.1~esm1"
},
{
"binary_name": "pki-server",
"binary_version": "11.0.0-1ubuntu0.1~esm1"
},
{
"binary_name": "pki-tks",
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},
{
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"binary_version": "11.0.0-1ubuntu0.1~esm1"
},
{
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},
{
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},
{
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}
]
}
}
],
"modified": "2026-10-08T09:54:47Z",
"provider": "osv",
"upstream": [
"CVE-2026-104988"
],
"references": [
"https://ubuntu.com/security/CVE-2026-104988",
"https://www.cve.org/CVERecord?id=CVE-2026-104988",
"https://access.redhat.com/security/cve/CVE-2026-104988",
"https://bugzilla.redhat.com/show_bug.cgi?id=2545316"
]
},
"related_cves": [
{
"value": "CVE-2026-104988",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 98926,
"published_at": "2026-10-02T20:17:00+00:00"
}