CVE-2026-17348 (GCVE-0-2026-17348)
Vulnerability from cvelistv5 – Published: 2026-07-31 15:59 – Updated: 2026-07-31 17:23
VLAI
EPSS
VEX
Title
pgAdmin 4: Missing authentication decorator on Constraints, preferences, Debugger and Schema Diff routes allows unauthenticated access in SERVER mode (incomplete fix for CVE-2026-12046)
Summary
In SERVER mode, pgAdmin 4 enforces authentication per route via the @pga_login_required decorator; the application's before_request hook only handles desktop-mode auto-login and the Kerberos/Webserver-auth redirect, so any route shipped without the decorator is reachable without authentication (CWE-306). This is the same defect class previously fixed as CVE-2026-12046 (the sqleditor close/update_connection routes).
A follow-up sweep, prompted by a report describing an incomplete fix for CVE-2026-12046, found further routes missing @pga_login_required: the Constraints blueprint's nodes and proplist (object listing) routes and its delete route (a state-mutating DELETE that removes table constraints); preferences.get_all_cli (GET, discloses all CLI-settable preference values); debugger.close (DELETE); and schema_diff.close (DELETE). An unauthenticated network client could therefore enumerate constraint metadata, delete table constraints, read preference values, and force-close debugger or schema-diff sessions belonging to other users, without ever authenticating.
Fix adds the missing @pga_login_required decorator (and the corresponding import to the Constraints module) to each of these routes. The change is decorator-only; no behavioral changes to the underlying handlers.
This issue affects pgAdmin 4 in SERVER mode: the Constraints and Debugger routes from 1.0, the Schema Diff close route from 4.18, and preferences.get_all_cli from 8.2, all before 9.17.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-31 17:22 UTC
CWE
- CWE-306 - Missing Authentication for Critical Function
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/pgadmin-org/pgadmin4/issues/10194 | issue-tracking |
| https://github.com/pgadmin-org/pgadmin4/commit/24… | patch |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| pgadmin.org | pgAdmin 4 |
Affected:
1.0 , < 9.17
(custom)
|
guessed | |
| pgadmin.org | pgAdmin 4 |
Affected:
4.18 , < 9.17
(custom)
|
guessed | |
| pgadmin.org | pgAdmin 4 |
Affected:
8.2 , < 9.17
(custom)
|
guessed |
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{
"lang": "en",
"value": "Threat model: an unauthenticated network client sends requests directly to the affected routes on a SERVER-mode pgAdmin deployment, bypassing the login page entirely since these routes never checked for a session. No privileges or user interaction are required. Scope is Unchanged. Confidentiality is None: nodes/proplist return only constraint metadata already visible to any authenticated user of the same object, and get_all_cli discloses only CLI-settable preference toggles, not credentials or data. Integrity is Low: the delete route removes a table constraint, a real but narrow and recoverable schema change (the constraint definition can be recreated; no data rows are lost), and the close routes only terminate another user\u0027s debugger/schema-diff session state. Availability is Low, reflecting that same session-termination nuisance. This is markedly less severe than CVE-2026-12046 (the sqleditor close/update_connection routes this defect class was first fixed for), which exposed live query-session hijacking rather than bounded metadata/schema-toggle access."
}
]
},
{
"cvssV4_0": {
"baseScore": 6.9,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
"version": "4.0"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "Same reasoning as the CVSS 3.1 entry: unauthenticated, no-interaction access to routes that disclose no meaningful confidentiality-sensitive data (VC:N), make a narrow and recoverable schema change or terminate another user\u0027s tool session (VI:L/VA:L). No subsequent system beyond pgAdmin\u0027s own scope is reached, so SC:N/SI:N/SA:N."
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-306",
"description": "CWE-306 Missing Authentication for Critical Function",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-31T15:59:18.714Z",
"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"shortName": "PostgreSQL"
},
"references": [
{
"tags": [
"issue-tracking"
],
"url": "https://github.com/pgadmin-org/pgadmin4/issues/10194"
},
{
"tags": [
"patch"
],
"url": "https://github.com/pgadmin-org/pgadmin4/commit/24fdcf0f58591c87ada31366c01e1af180eceb05"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "pgAdmin 4: Missing authentication decorator on Constraints, preferences, Debugger and Schema Diff routes allows unauthenticated access in SERVER mode (incomplete fix for CVE-2026-12046)"
}
},
"cveMetadata": {
"assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
"assignerShortName": "PostgreSQL",
"cveId": "CVE-2026-17348",
"datePublished": "2026-07-31T15:59:18.714Z",
"dateReserved": "2026-07-25T02:52:55.455Z",
"dateUpdated": "2026-07-31T17:23:08.497Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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