CVE-2025-57324
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 · uneditedparse is a package designed to parse JavaScript SDK. A Prototype Pollution vulnerability in the SingleInstanceStateController.initializeState function of parse version 5.3.0 and before allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.
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 confidenceA Prototype Pollution vulnerability exists in the parse JavaScript SDK's SingleInstanceStateController.initializeState function (versions 5.3.0 and prior). Attackers can inject arbitrary properties into Object.prototype via a crafted payload, leading to denial of service as the minimum impact.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 5.3.0CVSS 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
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Identify parse JavaScript SDK versionCheck the installed version by running 'npm list parse' in your project directory, or inspect package.json for the 'parse' or '@parse/node' dependency version entryAffected if The version listed is 5.3.0 or any version prior to 5.3.0 (e.g., 5.2.0, 5.1.0, etc.)
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Locate SingleInstanceStateController usageSearch your codebase for imports or requires referencing 'SingleInstanceStateController' or the initializeState function (e.g., grep for 'initializeState' or 'SingleInstanceStateController')Affected if Your codebase imports or calls SingleInstanceStateController.initializeState from the parse SDK
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Verify dynamic object initialization from untrusted inputReview code paths where initializeState is called with data derived from user input, request bodies, or external sources; check if these sources could contain __proto__, constructor, or other object property namesAffected if initializeState receives objects constructed from untrusted or attacker-controlled input without prior sanitization of prototype-affecting keys
You are affected if you use parse JavaScript SDK version 5.3.0 or earlier AND your application passes unsanitized user-controlled objects to the initializeState function.
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 parse to a version newer than 5.3.0 if available, or implement strict input validation/sanitization on all data passed to the initializeState function to prevent injection of __proto__, constructor, or other prototype properties.
- Consultation4.0 h
- Implementation8.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-57324 — 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-2025-57324 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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- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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