CVE-2026-40174 Masa CMS CSRF in user address management allows unauthorized address changes
An attacker can trick a logged-in administrator into modifying user address records, leading to data corruption and communication redirection.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-40174?
CVE-2026-40174 is a high-severity vulnerability in MasaCMS, published on 6 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the cUsers.updateAddress function does not properly validate anti-CSRF tokens for user address management operations.
An attacker can induce a logged-in administrator to submit a forged request that adds, modifies, or deletes user address records, including email addresses and phone numbers. This can be used to alter contact information, redirect organizational communications, and corrupt address data in the user directory. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, restrict access to the administrative backend, use browser isolation for administrative sessions, or deploy filtering rules to block forged requests to the affected endpoint
Weakness: CWE-352
Which versions are affected by CVE-2026-40174?
How do I fix CVE-2026-40174?
No fix has been published for CVE-2026-40174 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-40174 being exploited?
There is no known exploitation of CVE-2026-40174 in the wild and no public exploit code.
Sources
Also known as GHSA-572m-p246-4356.