CVE-2025-49507
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 · uneditedDeserialization of Untrusted Data vulnerability in LoftOcean CozyStay cozystay allows Object Injection.This issue affects CozyStay: from n/a through < 1.7.1.
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 deserialization vulnerability in LoftOcean CozyStay allows unauthenticated attackers to inject malicious PHP objects by supplying untrusted data to deserialization routines. This object injection can potentially lead to remote code execution, file operations, or other attacks depending on available classes in the application context.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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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Identify if CozyStay is installedSearch web directories for 'CozyStay', 'cozystay', or 'LoftOcean' in application files, themes, or plugins. Check for file paths containing these naming patterns.Affected if The product LoftOcean CozyStay is present in the environment
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Determine installed CozyStay versionLook for version information in the application: check plugin/theme headers (style.css comments, main PHP file docblocks), composer.json, package.json, or a dedicated version/config file. Compare the version number to the affected range (versions before 1.7.1).Affected if Installed version is lower than 1.7.1 (e.g., 1.7.0, 1.6.x, 1.5.x, etc.)
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Locate deserialization code in the applicationSearch PHP source files for usage of unserialize(), eval(), base64_decode() combined with variable variables ($$), or similar unsafe deserialization patterns. Use grep: 'unserialize' across the codebase.Affected if Code contains calls to unserialize() or similar functions that process untrusted input without validation
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Verify if user input reaches deserializationTrace the data flow from HTTP request parameters (GET, POST, COOKIE) to the identified deserialization calls. Check if any parameter is used directly in unserialize() without sanitization or allowlist filtering.Affected if User-controlled input (request parameters) is passed directly to deserialization functions without validation
A user is affected if CozyStay version is below 1.7.1 AND the application code contains reachable unserialize() calls that process untrusted user input.
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.
dbcve · scopedUpgrade CozyStay to version 1.7.1 or later. If upgrade is not immediately possible, audit and restrict any user-controlled input reaching PHP unserialize() or similar deserialization functions, and implement allowlist-based validation for object classes.
CozyStay version 1.7.1 or later
- Backup your WordPress site and database before performing any updates
- Update the CozyStay plugin to version 1.7.1 or later
- Verify the update was successful by checking the plugins page in WordPress admin
- Test critical functionality of the CozyStay plugin to ensure the update did not break expected features
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-49507 — 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-2025-49507 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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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