CVE-2025-9636Network attack vector

OAuth token theft via missing opener isolation

Published Sep 4, 2025 · Updated Sep 4, 2025

Origin validation error in pgAdmin 4 before 9.8 allows remote authenticated users to steal OAuth tokens through a malicious parent window. The response-header path omits Cross-Origin-Opener-Policy, leaving the OAuth login browsing context coupled to its opener and redirectable to an attacker-controlled client. OAuth must be enabled in server mode and a victim must complete the attacker-initiated flow; a stolen mail-scoped token exposes email and password-reset messages.

CVSS severity7.9
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Origin validation error in pgAdmin 4 before 9.8 allows remote authenticated users to steal OAuth tokens through a malicious parent window. The response-header path omits Cross-Origin-Opener-Policy, leaving the OAuth login browsing context coupled to its opener and redirectable to an attacker-controlled client. OAuth must be enabled in server mode and a victim must complete the attacker-initiated flow; a stolen mail-scoped token exposes email and password-reset messages.

The record

CVE
CVE-2025-9636
Published
Sep 4, 2025
Updated
Sep 4, 2025
Vendor
pgAdmin Development Team
Product
pgAdmin 4
Classifications
CWE-346, T1528
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <9.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

pgAdmin Development Team · pgAdmin 4version=0 <9.8

Published CVSS scores

7.9PostgreSQLCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-346Origin Validation Error
T1528Steal Application Access Token

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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