CVE-2026-4562
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA security flaw has been discovered in MacCMS 2025.1000.4052. This affects an unknown part of the file application/api/controller/Timming.php of the component Timming API Endpoint. The manipulation results in missing authentication. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceMacCMS 2025.1000.4052 contains a missing authentication vulnerability in the Timming API Endpoint (application/api/controller/Timming.php). Remote attackers can access this API functionality without any authentication credentials, potentially allowing unauthorized actions or data exposure. The public availability of exploit code increases the likelihood of active exploitation.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
-
Confirm MacCMS installationCheck for the presence of MacCMS by searching for typical MacCMS file structures such as index.php, admin.php, or the /application directory in the web rootAffected if MacCMS is present on the server
-
Identify installed MacCMS versionCheck version file or header files within the /application directory. Common locations include version.php, config.php, or the index.php footer which often displays the versionAffected if The installed version matches or falls within MacCMS 2025.1000.4052
-
Locate the Timming API endpoint fileNavigate to the web root and check for the existence of application/api/controller/Timming.phpAffected if The file application/api/controller/Timming.php exists in the web directory
-
Verify API endpoint accessibilityAttempt an HTTP request to the Timming API endpoint (typically /application/api/controller/Timming.php or the routed URL such as /api.php/Timming/) without providing any authentication headers or credentialsAffected if The API endpoint responds without requiring authentication (returns 200 OK instead of 401/403)
-
Check if API is exposed to networkReview web server configuration (Apache/nginx) to determine if the /application/api/ directory is accessible from the public internet and not blocked by .htaccess or nginx access rulesAffected if The /application/api/ endpoint is publicly accessible without IP restrictions or authentication
A system is affected if MacCMS 2025.1000.4052 is installed and the Timming API endpoint at application/api/controller/Timming.php is accessible without any authentication.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement proper authentication and authorization checks on the Timming API endpoint; if the endpoint is not required for production use, disable it until an official patch is released.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-4562 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-4562 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data