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CVE-2025-12887

Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App <= 3.6.1 - Missing Authorization to Authenticated (Subscriber+) OAuth Token Update

Published: Dec 3, 2025Updated: Dec 4, 2025 Sources: CVE List NVDCWE-862
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
0.3%
Top 83.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
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Description

The Post SMTP plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.6.1. This is due to the plugin not properly verifying that a user is authorized to update OAuth tokens on the 'handle_gmail_oauth_redirect' function. This makes it possible for authenticated attackers, with subscriber level access and above, to inject invalid or attacker-controlled OAuth credentials.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-862

Affected Products

Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile Appsaadiqbal
Mixed
Web & CMS Plugins / wordpress-plugin
saadiqbalindividual-devWeb & CMS Pluginsaka post smtp – complete email deliverability and smtp solution with email logs, alerts, backup smtp & mobile app, advanced file manager – ultimate file manager for wordpress and document library solution, points management system for gamification, ranks, badges, and loyalty rewards program – mycred

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
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References

https://plugins.trac.wordpress.org/changeset/3402203
plugins.trac.wordpress.org
https://www.wordfence.com/threat-intel/vulnerabilities/id/5bd9f312-99e1-4dc2-855d-90339c2e24da?source=cve
wordfence.com

Timeline

Published
Dec 3, 2025
Last Updated
Dec 4, 2025

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