Upstream information
Description
pgAdmin 4's Webserver authentication source is intended to accept an identity asserted by the web server or reverse proxy in front of pgAdmin, delivered through the WSGI/CGI environment. WebserverAuthentication.get_user() read config.WEBSERVER_REMOTE_USER from request.environ and, when that returned nothing, fell back to reading the same name directly from the inbound HTTP request headers via request.headers.get(). An inbound HTTP header is written by whoever sends the request, so any client able to reach pgAdmin could supply that header itself and be authenticated as any username it named, including an existing Administrator, without presenting a password or any other credential. The environment lookup could also be satisfied by a client-supplied header whenever WEBSERVER_REMOTE_USER was configured to an HTTP_-prefixed or hyphenated name such as HTTP_X_FORWARDED_USER or X-Forwarded-User, since WSGI servers place inbound headers into the environment under exactly those names. Deployments are affected only when 'webserver' is enabled in AUTHENTICATION_SOURCES.The fix distinguishes a genuine CGI/WSGI variable from a header-derived one and implicitly trusts only the former. A header-asserted identity is now accepted only when the operator explicitly opts in via WEBSERVER_REMOTE_USER_FROM_HEADER, the request arrives from a peer listed in WEBSERVER_TRUSTED_PROXIES, and, when configured, a shared secret supplied in WEBSERVER_SHARED_SECRET_HEADER matches WEBSERVER_SHARED_SECRET under a constant-time comparison. The trusted-peer check deliberately reads the real socket peer address rather than request.remote_addr, because ProxyFix rewrites the latter from the client-controlled X-Forwarded-For header and would otherwise allow an attacker to claim to be the trusted proxy. As defence in depth, login() now refuses any account whose auth_source is not 'webserver', so a misconfigured trust gate cannot be used to assume an internal or LDAP account.
This issue affects pgAdmin 4: from 6.2 before 9.18.
SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having critical severity.
| CVSS detail | CNA (PostgreSQL) | SUSE |
|---|---|---|
| Base Score | 9.8 | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | High | High |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | CNA (PostgreSQL) | SUSE |
|---|---|---|
| Base Score | 9.3 | 8.3 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Attack Requirements | None | Present |
| Privileges Required | None | None |
| User Interaction | None | None |
| Vulnerable System Confidentiality Impact | High | High |
| Vulnerable System Integrity Impact | High | Low |
| Vulnerable System Availability Impact | High | Low |
| Subsequent System Confidentiality Impact | None | None |
| Subsequent System Integrity Impact | None | None |
| Subsequent System Availability Impact | None | None |
| CVSSv4 Version | 4.0 | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP7 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | pgadmin4 | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP4 | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP5 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP4 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP4-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP5 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP5-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP6 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP6-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | pgadmin4 | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | pgadmin4 | Affected |
| SUSE Enterprise Storage 6 | pgadmin4 | Affected |
| SUSE Enterprise Storage 7 | pgadmin4 | Affected |
| SUSE Enterprise Storage 7.1 | pgadmin4 | Affected |
| SUSE Linux Enterprise Desktop 15 SP6 | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4 | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | pgadmin4 | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP1 | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP2 | pgadmin4 | Affected |
| SUSE Linux Enterprise Module for Server Applications 15 SP3 | pgadmin4 | Affected |
| SUSE Linux Enterprise Real Time 15 SP2 | pgadmin4 | Affected |
| SUSE Linux Enterprise Real Time 15 SP3 | pgadmin4 | Affected |
| SUSE Linux Enterprise Real Time 15 SP4 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP1 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP1-BCL | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP1-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP2 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP2-BCL | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP2-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP3 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP3-BCL | pgadmin4 | Affected |
| SUSE Linux Enterprise Server 15 SP3-LTSS | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | pgadmin4 | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | pgadmin4 | Affected |
| SUSE Manager Proxy 4.0 | pgadmin4 | Affected |
| SUSE Manager Proxy 4.1 | pgadmin4 | Affected |
| SUSE Manager Proxy 4.2 | pgadmin4 | Affected |
| SUSE Manager Proxy 4.3 | pgadmin4 | Affected |
| SUSE Manager Proxy LTS 4.3 | pgadmin4 | Affected |
| SUSE Manager Retail Branch Server 4.0 | pgadmin4 | Affected |
| SUSE Manager Retail Branch Server 4.1 | pgadmin4 | Affected |
| SUSE Manager Retail Branch Server 4.2 | pgadmin4 | Affected |
| SUSE Manager Retail Branch Server 4.3 | pgadmin4 | Affected |
| SUSE Manager Retail Branch Server LTS 4.3 | pgadmin4 | Affected |
| SUSE Manager Server 4.0 | pgadmin4 | Affected |
| SUSE Manager Server 4.1 | pgadmin4 | Affected |
| SUSE Manager Server 4.2 | pgadmin4 | Affected |
| SUSE Manager Server 4.3 | pgadmin4 | Affected |
| SUSE Manager Server LTS 4.3 | pgadmin4 | Affected |
| openSUSE Leap 15.3 | pgadmin4 | Affected |
| openSUSE Leap 15.4 | pgadmin4 | Affected |
| openSUSE Leap 15.5 | pgadmin4 | Affected |
| openSUSE Leap 15.6 | pgadmin4 | Affected |
SUSE Timeline for this CVE
CVE page created: Fri Sep 18 16:03:39 2026CVE page last modified: Fri Sep 18 17:48:18 2026