CVE-2026-25345
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 · uneditedImproper Validation of Specified Quantity in Input vulnerability in GalleryCreator SimpLy Gallery simply-gallery-block allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects SimpLy Gallery: from n/a through <= 3.3.2.
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 confidenceThe SimpLy Gallery WordPress plugin (simply-gallery-block) has an improper input validation vulnerability affecting the quantity parameter, which allows unauthorized users to access functionality not properly constrained by Access Control Lists (ACLs). This authorization bypass, combined with the critical CVSS 9.9 rating, indicates the flaw likely allows unauthenticated or low-privilege attackers to execute privileged operations by manipulating quantity-related inputs.
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
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
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.
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Verify SimpLy Gallery plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and look for 'SimpLy Gallery' or 'simply-gallery-block'. Note the version number displayed next to the plugin name.Affected if The plugin is installed and active in WordPress
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Check the plugin version against fixed releaseCompare your installed version to the version that contains proper input validation and access control constraints. Check the WordPress plugin repository changelog or release notes for the version that addresses this authorization bypass.Affected if Your installed version is older than the patched version containing proper validation
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Identify if gallery blocks with quantity parameter are in useInspect pages/posts using the SimpLy Gallery block. The vulnerability affects the quantity parameter functionality - check if any published content includes gallery blocks where quantity/limit settings are exposed or accessible.Affected if The plugin's gallery blocks with quantity configuration are being used on the site
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Test for unauthorized access to quantity-related functionalityUse a browser or HTTP tool to access gallery endpoints with manipulated quantity parameters while unauthenticated or as a low-privilege user. Look for successful responses that should require higher privileges.Affected if Unauthenticated or low-privilege users can successfully manipulate quantity parameters to access restricted functionality
If the SimpLy Gallery plugin is installed and running a version lacking proper input validation on the quantity parameter, the site is vulnerable to authorization bypass.
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 dataUpgrade to the latest version of SimpLy Gallery which contains proper input validation and access control constraints. If no patch is available, disable the plugin until a fix is released.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25345 — 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-2026-25345 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
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- 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
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