Mailoptin
CVE-2023-23980
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 4.8 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, user interaction required. |
| Exploit ScenarioDerived | A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application. |
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Alert meAnalysisAI
Auth. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in MailOptin Popup Builder Team MailOptin plugin <= 1.2.54.0 versions. Affected products include: Mailoptin.
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Severity by source
AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in MailOptin Popup Builder Team MailOptin plugin <= 1.2.54.0 versions.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
Affected Products (CPE)NVD
Privilege escalation in the MailOptin WordPress plugin (by properfraction) affects all versions up to and including 1.2.
Stored Cross-Site Scripting in MailOptin WordPress plugin (versions ≤ 1.2.78.0) allows Contributor-level authenticated u
The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber - MailOptin plugin for WordPress is vulnerable
Unauthenticated Optin Campaign Cache Deletion vulnerability in MailOptin plugin <= 1.2.49.0 at WordPress. Rated medium s
GitHub PoC
Exploit-DB