CVE-2026-78293 HIGH

CVE-2026-78293: WordPress WP w3all phpBB plugin <= 3.0.6 - Cross Site Scripting (XSS) vulnerability

Vendor Axew3

Product WP w3all phpBB

Weakness CWE-79 · XSS

Published August 27, 2026

Last update August 27, 2026

View on NVD All CVEs

CVSS base score

7.1/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Unauthenticated Cross Site Scripting (XSS) in WP w3all phpBB <= 3.0.6 versions.

Explanation of Vulnerability in Simple Terms

02Summary

WP w3all phpBB versions up to 3.0.6 contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability requires user interaction—typically clicking a malicious link—and can affect users across the site. An attacker with no authentication can craft a payload that executes in a victim's browser, potentially stealing session data or performing actions on their behalf.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers when they visit a crafted link.

Potential impact on your site

04Site Impact

Site users can be tricked into executing attacker code, risking account compromise and data theft.

Conditions required to exploit

05Prerequisites

Victim must click a malicious link or visit an attacker-controlled page; no authentication required.

Key dates

06Disclosure timeline

August 27, 2026 CVE published

August 27, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-78293 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

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