CVE-2026-116244 (GCVE-0-2026-116244)
Vulnerability from cvelistv5 – Published: 2026-10-30 19:55 – Updated: 2026-10-30 19:55
VLAI
EPSS
VEX
Title
pgAdmin 4: libpq uses the pgAdmin service account's Kerberos credentials
Summary
When a pgAdmin 4 connection was not meant to use a Kerberos user's delegated credentials, pgAdmin removed KRB5CCNAME from its environment, so the Kerberos library fell back to the default credential cache, or a client keytab, of the operating-system account running pgAdmin. libpq then answered any server that asked for GSSAPI authentication with that account's ticket, whatever user name the pgAdmin user gave, so in server mode any user could connect as the service account's Kerberos principal; gssencmode=disable did not prevent it. On Windows, SSPI used the service account's logon in the same way. psql was also started with pgAdmin's environment, which could hold another user's credential cache while that user was connecting.
The fix points KRB5CCNAME and KRB5_CLIENT_KTNAME at a file that cannot exist except while a Kerberos-authenticated user connects with Kerberos, and gives every other connection, psql and the utilities require_auth=!gss,!sspi and gssencmode=disable, checked on the final connection string. require_auth needs libpq 16 or later.
This issue affects pgAdmin 4: before 9.19.
Severity
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pgadmin-org/pgadmin4/issues/10655 | issue-tracking |
| https://github.com/pgadmin-org/pgadmin4/commit/14… | patch |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| pgadmin.org | pgAdmin 4 |
Affected:
0 , < 9.19
(custom)
|
guessed |
Date Public
2026-10-29 00:00
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"modules": [
"Servers",
"Authentication",
"PSQL Tool",
"Backup",
"Restore"
],
"product": "pgAdmin 4",
"programFiles": [
"https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/driver/psycopg3/server_manager.py",
"https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/locker.py"
],
"repo": "https://github.com/pgadmin-org/pgadmin4",
"vendor": "pgadmin.org",
"versions": [
{
"lessThan": "9.19",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "remediation developer",
"value": "Dave Page \u003cdpage@pgadmin.org\u003e"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Kundan Sable \u003ckundan.sable@enterprisedb.com\u003e"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Hitesh Jambhale \u003chitesh.jambhale@enterprisedb.com\u003e"
},
{
"lang": "en",
"type": "remediation reviewer",
"value": "Ashesh Vashi \u003cashesh.vashi@enterprisedb.com\u003e"
}
],
"datePublic": "2026-10-29T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "When a pgAdmin 4 connection was not meant to use a Kerberos user\u0027s delegated credentials, pgAdmin removed KRB5CCNAME from its environment, so the Kerberos library fell back to the default credential cache, or a client keytab, of the operating-system account running pgAdmin. libpq then answered any server that asked for GSSAPI authentication with that account\u0027s ticket, whatever user name the pgAdmin user gave, so in server mode any user could connect as the service account\u0027s Kerberos principal; gssencmode=disable did not prevent it. On Windows, SSPI used the service account\u0027s logon in the same way. psql was also started with pgAdmin\u0027s environment, which could hold another user\u0027s credential cache while that user was connecting.\n\nThe fix points KRB5CCNAME and KRB5_CLIENT_KTNAME at a file that cannot exist except while a Kerberos-authenticated user connects with Kerberos, and gives every other connection, psql and the utilities require_auth=!gss,!sspi and gssencmode=disable, checked on the final connection string. require_auth needs libpq 16 or later.\n\nThis issue affects pgAdmin 4: before 9.19."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "Any authenticated user who can register a server. Attack Complexity is High: the service account must hold a credential cache or keytab, or run on a domain-joined Windows host, and a reachable server must accept that principal. Scope is Changed because the connection is made as the service account\u0027s principal, an identity the attacker was never granted; Confidentiality and Integrity are High on that database server. Availability is None."
}
]
},
{
"cvssV4_0": {
"baseScore": 7.1,
"baseSeverity": "HIGH",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N",
"version": "4.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "Same reasoning as the CVSS 3.1 entry. AT:P for the Kerberos deployment conditions. VC:H because the service account\u0027s credential is used through pgAdmin; SC:H/SI:H for the database server reached with it."
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-522",
"description": "CWE-522 Insufficiently Protected Credentials",
"lang": "en",
"type": "CWE"
},
{
"cweId": "CWE-1188",
"description": "CWE-1188 Initialization of a Resource with an Insecure Default",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-30T19:55:15.101Z",
"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"shortName": "PostgreSQL"
},
"references": [
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/pgadmin-org/pgadmin4/issues/10655"
},
{
"tags": [
"patch"
],
"url": "https://github.com/pgadmin-org/pgadmin4/commit/145e511f05eed69ebcadd3cd61ffea0a5b4c69a4"
}
],
"source": {
"discovery": "INTERNAL"
},
"title": "pgAdmin 4: libpq uses the pgAdmin service account\u0027s Kerberos credentials"
}
},
"cveMetadata": {
"assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"assignerShortName": "PostgreSQL",
"cveId": "CVE-2026-116244",
"datePublished": "2026-10-30T19:55:15.101Z",
"dateReserved": "2026-10-25T16:26:16.419Z",
"dateUpdated": "2026-10-30T19:55:15.101Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-116244",
"date": "2026-10-31",
"epss": "0.00277",
"percentile": "0.20212"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"modules": [
"Servers",
"Authentication",
"PSQL Tool",
"Backup",
"Restore"
],
"product": "pgAdmin 4",
"programFiles": [
"https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/driver/psycopg3/server_manager.py",
"https://github.com/pgadmin-org/pgadmin4/blob/master/web/pgadmin/utils/locker.py"
],
"repo": "https://github.com/pgadmin-org/pgadmin4",
"vendor": "pgadmin.org",
"versions": [
{
"lessThan": "9.19",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "When a pgAdmin 4 connection was not meant to use a Kerberos user\u0027s delegated credentials, pgAdmin removed KRB5CCNAME from its environment, so the Kerberos library fell back to the default credential cache, or a client keytab, of the operating-system account running pgAdmin. libpq then answered any server that asked for GSSAPI authentication with that account\u0027s ticket, whatever user name the pgAdmin user gave, so in server mode any user could connect as the service account\u0027s Kerberos principal; gssencmode=disable did not prevent it. On Windows, SSPI used the service account\u0027s logon in the same way. psql was also started with pgAdmin\u0027s environment, which could hold another user\u0027s credential cache while that user was connecting.\n\nThe fix points KRB5CCNAME and KRB5_CLIENT_KTNAME at a file that cannot exist except while a Kerberos-authenticated user connects with Kerberos, and gives every other connection, psql and the utilities require_auth=!gss,!sspi and gssencmode=disable, checked on the final connection string. require_auth needs libpq 16 or later.\n\nThis issue affects pgAdmin 4: before 9.19."
}
],
"id": "CVE-2026-116244",
"lastModified": "2026-10-30T20:17:04.327",
"metrics": {
"cvssMetricV31": [
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"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
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"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
"version": "3.1"
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"type": "Secondary"
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],
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{
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"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
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"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"type": "Secondary"
}
]
},
"published": "2026-10-30T20:17:04.327",
"references": [
{
"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"url": "https://github.com/pgadmin-org/pgadmin4/commit/145e511f05eed69ebcadd3cd61ffea0a5b4c69a4"
},
{
"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"url": "https://github.com/pgadmin-org/pgadmin4/issues/10655"
}
],
"sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"vulnStatus": "Received",
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"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"type": "Secondary"
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}
}
}
}
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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