Masa CMS is affected by an Open Redirect vulnerability due to improper handling of scheme-relative URLs. The application incorrectly interprets paths beginning with double slashes (//) as internal paths, failing to validate the redirect target before processing. The application treats these values as internal paths and processes them without confirming that the redirect target remains on the local site.

An attacker can craft a URL on the trusted Masa CMS domain that redirects a victim to an external attacker-controlled site. This can be used for phishing and, in some authentication flows, may expose tokens or other sensitive data to the external site. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, reject or rewrite redirect parameters that begin with // and consider disabling forceDirectoryStructure if compatible with the deployment.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
MasaCMS MasaCMS affected
Version Status Constraints
< 7.2.10 affected —
>= 7.3.0, < 7.3.15 affected —
>= 7.4.0, < 7.4.10 affected —
>= 7.5.0, < 7.5.3 affected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Masacms Subscribe
Masacms Subscribe

Project Subscriptions

Vendors Products
Masacms Subscribe
Masacms Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/MasaCMS/MasaCMS/security/advisories/GHSA-xw99-h3mw-wj47 cve-icon cve-icon
History

Wed, 06 May 2026 23:30:00 +0000

Type Values Removed Values Added
First Time appeared Masacms
Masacms masacms
Vendors & Products Masacms
Masacms masacms

Wed, 06 May 2026 21:00:00 +0000

Type Values Removed Values Added
Description Masa CMS is affected by an Open Redirect vulnerability due to improper handling of scheme-relative URLs. The application incorrectly interprets paths beginning with double slashes (//) as internal paths, failing to validate the redirect target before processing. The application treats these values as internal paths and processes them without confirming that the redirect target remains on the local site. An attacker can craft a URL on the trusted Masa CMS domain that redirects a victim to an external attacker-controlled site. This can be used for phishing and, in some authentication flows, may expose tokens or other sensitive data to the external site. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, reject or rewrite redirect parameters that begin with // and consider disabling forceDirectoryStructure if compatible with the deployment.
Title Masa CMS open redirect via improper handling of scheme-relative URLs
Weaknesses CWE-601
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-06T20:13:18.357Z

Reserved: 2026-04-10T22:50:01.357Z

Link: CVE-2026-40332

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-05-06T21:16:01.503

Modified: 2026-05-06T21:22:50.760

Link: CVE-2026-40332

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-06T23:15:17Z

Weaknesses