CVE-2023-29436 MEDIUM

CVE-2023-29436: WordPress IFrame Shortcode Plugin <= 1.0.5 is vulnerable to Cross Site Scripting (XSS)

Vendor Flyn San

Product IFrame Shortcode

Weakness CWE-79 · XSS

Published June 26, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L

What the vulnerability does

01Description

Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in Flyn San IFrame Shortcode plugin <= 1.0.5 versions.

Explanation of Vulnerability in Simple Terms

02Summary

The IFrame Shortcode plugin contains a cross-site scripting (XSS) vulnerability in versions up to 1.0.5. An authenticated user with low privileges can inject malicious scripts into iframe shortcodes. When another user views a page containing the affected shortcode, the injected script executes in their browser, potentially allowing the attacker to steal session tokens or perform actions on their behalf.

What an attacker can do

03Attacker Capabilities

Inject and execute malicious JavaScript in other users' browsers via iframe shortcode content.

Potential impact on your site

04Site Impact

Authenticated users can inject scripts that compromise other visitors' sessions and data without admin intervention.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account and the victim must view a page with the malicious shortcode.

Key dates

06Disclosure timeline

June 26, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-29436 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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