pgAdmin 4: An LDAP or Kerberos login is logged in to another account with the same username

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-116239
StatePUBLISHED
AssignerPostgreSQL
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-30 20:17:03 UTC
Updated2026-11-04 20:50:28 UTC
DescriptionIn server mode pgAdmin 4 keeps an account per authentication source, so the same username can exist as, for example, an internal account and an LDAP account. After LDAP or Kerberos authenticated a user, pgAdmin chose the account to log in by username alone, or took the account Flask-Security's login form had looked up, without checking that it came from the source that authenticated the user. The session therefore belonged to another account, with its role, its servers and its saved database passwords: - An LDAP or Kerberos user whose username matched an internal account was logged in as that internal account, including the administrator account created when pgAdmin is first set up. - With internal authentication listed before LDAP or Kerberos in AUTHENTICATION_SOURCES, the login form's internal validation looks up the account whose email was typed and keeps it even though its password does not match. A Kerberos user could type another Kerberos user's principal and be logged in as that user, and an LDAP user could do the same with an LDAP account whose email is their username. Exploitation requires valid credentials for an LDAP directory or Kerberos realm that pgAdmin is configured to use. The fix looks the account up by the authenticated username and the source that authenticated it, and no longer uses the account the login form found for any source but internal authentication. Internal authentication logs in that account only if it is an internal account. Desktop mode is not affected. This issue affects pgAdmin 4: before 9.19.

Risk And Classification

Primary CVSS: v4.0 8.9 HIGH from f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/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

EPSS: 0.003890000 probability, percentile 0.331500000 (date 2026-11-04)

Problem Types: CWE-287 | CWE-639 | CWE-287 CWE-287 Improper Authentication | CWE-639 CWE-639 Authorization Bypass Through User-Controlled Key

VersionSourceTypeScoreSeverityVector
4.0f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Secondary8.9HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N/E:X/C...
4.0CNACVSS8.9HIGHCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:N
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1f86ef6dc-4d3a-42ad-8f28-e6d5547a5007Secondary8.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS8.5HIGHCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
High
Sub Integrity
High
Sub Availability
None

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Pgadmin Pgadmin 4 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Pgadmin.org PgAdmin 4 affected 9.19 custom Not specified

References

ReferenceSourceLinkTags
github.com/pgadmin-org/pgadmin4/issues/10675 f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 github.com Issue Tracking
github.com/pgadmin-org/pgadmin4/commit/7378060e5c8f7c3279b8138d371e13fd8... f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 github.com Patch
github.com/pgadmin-org/pgadmin4/commit/269e32d5ee01f2eb5de36e464d44487a8... f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 github.com Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Yves Soete of Blacksight LLC <[email protected]> (en)

CNA: Dave Page <[email protected]> (en)

CNA: Ashesh Vashi <[email protected]> (en)

CNA: Hitesh Jambhale <[email protected]> (en)

CNA: Kundan Sable <[email protected]> (en)

CNA: Ashesh Vashi <[email protected]> (en)

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