Vulnerability-Lookup

GHSA-5539-RJHP-JVGV

Vulnerability from github – Published: 2026-10-30 21:32 – Updated: 2026-10-30 21:32

Details

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

8.2 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

7.1 (High)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-116244"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-522"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-30T20:17:04Z",
    "severity": "HIGH"
  },
  "details": "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": "GHSA-5539-rjhp-jvgv",
  "modified": "2026-10-30T21:32:21Z",
  "published": "2026-10-30T21:32:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116244"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pgadmin-org/pgadmin4/issues/10655"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pgadmin-org/pgadmin4/commit/145e511f05eed69ebcadd3cd61ffea0a5b4c69a4"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-116244 (GCVE-0-2026-116244)

Vulnerability from cvelistv5 – Published: 2026-10-30 19:55 – Updated: 2026-10-30 19:55

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

8.2 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

7.1 (High)


                        
                          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

CWE

CWE-522 - Insufficiently Protected Credentials
CWE-1188 - Initialization of a Resource with an Insecure Default

Assigner

PostgreSQL CNA under the redhat root

CNA scorecard C 69/100 over 115 records in the last 180 days details

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
pgadmin.org	pgAdmin 4	Affected: 0 , < 9.19 (custom)

Date Public

2026-10-29 00:00

Credits

Dave Page <dpage@pgadmin.org> Kundan Sable <kundan.sable@enterprisedb.com> Hitesh Jambhale <hitesh.jambhale@enterprisedb.com> Ashesh Vashi <ashesh.vashi@enterprisedb.com>

Show details on NVD website

JSON

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{
  "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"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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