CVE-2026-2278

VW Writer Blog <= 1.3.8 - Missing Authorization to Authenticated (Subscriber+) Theme Settings Reset

2026-09-18 00:00

Strategic Overview

Status: Patched in 1.3.9
Affected Theme: VW Writer Blog
Affected Version: <= 1.3.8
CVSS: 4.3Medium
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2026-2278

At a glance

CVE-2026-2278 is a medium-severity Missing Authorization vulnerability in the VW Writer Blog WordPress theme, affecting versions <= 1.3.8. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.3.9; sites on affected versions should update now. Disclosed September 2026, reported by Legion Hunter.

Vulnerability Overview

The VW Writer Blog theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'vw_writer_blog_reset_all_settings' function in all versions up to, and including, 1.3.8. This makes it possible for authenticated attackers, with Subscriber-level access and above, to reset all theme customizer settings to their defaults.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-862: Missing Authorization

VW Writer Blog <= 1.3.8 carries this weakness at vw_writer_blog_reset_all_settings, and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For VW Writer Blog the fix is 1.3.9: builds <= 1.3.8 are affected, anything from 1.3.9 onward is not.

Remediation

Update to version 1.3.9, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: VW Writer Blog 1.3.9 closes this, and updating the theme is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-2278 https://www.wordfence.com/threat-intel/vulnerabilities/id/2b1751f0-d385-43f5-bf90-82479a9c6694 https://nvd.nist.gov/vuln/detail/CVE-2026-2278

CVSS Vector

4.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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