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CVE-2023-5958

POST SMTP Mailer < 2.7.1 - Unauthenticated Cross-site Scripting

MEDIUM
6.1
CVSS Score
Published: November 27, 2023 at 04:22 PM UTC
Updated: June 17, 2026 at 06:49 AM UTC
1 product affected across 1 vendorPost SMTP

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.5%

Description

The POST SMTP Mailer WordPress plugin before 2.7.1 does not escape email message content before displaying it in the backend, allowing an unauthenticated attacker to perform XSS attacks against highly privileged users.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Post SMTP· Wpexpertswordpress-plugin
95%
v < 2.7.1
Affected range stops below 2.7.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical DescriptionThird Party Advisory
Source: [email protected]
https://wpscan.com/vulnerability/22fa478d-e42e-488d-9b4b-a8720dec7cee

CVSS

6.1MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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