CVE-2023-27415 MEDIUM

CVE-2023-27415: WordPress LetterPress Plugin <= 1.1.2 is vulnerable to Cross Site Scripting (XSS)

Vendor Themeqx

Product LetterPress

Weakness CWE-79 · XSS

Published August 8, 2023

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

5.9/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Themeqx LetterPress plugin <= 1.1.2 versions.

Explanation of Vulnerability in Simple Terms

02Summary

LetterPress versions up to 1.1.2 contain a stored cross-site scripting (XSS) vulnerability. An authenticated administrator can inject malicious scripts that execute in the browsers of other users viewing affected pages. The vulnerability requires an admin to craft and save malicious input, and a victim to view the compromised content. This can lead to session hijacking, credential theft, or malware distribution.

What an attacker can do

03Attacker Capabilities

Run malicious JavaScript in other users' browsers when they view affected pages.

Potential impact on your site

04Site Impact

Admins can inject scripts that compromise other users' sessions or steal their data; requires admin account access.

Conditions required to exploit

05Prerequisites

Attacker must have administrator privileges and a victim must view the page containing the injected script.

Key dates

06Disclosure timeline

August 8, 2023 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-27415 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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