CVE-2026-39560
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 · uneditedUnauthenticated PHP Object Injection in Hiroshi <= 1.5.1 versions.
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 confidenceUnauthenticated PHP Object Injection vulnerability in the Hiroshi application (versions 1.5.1 and below). This deserialization flaw allows remote attackers to inject malicious PHP objects without authentication, potentially leading to remote code execution via magic method invocation chains.
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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/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 Hiroshi application is deployedSearch web server document roots, application directories, or package managers for the Hiroshi application folder or filesAffected if Hiroshi is found installed in the environment
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Determine installed Hiroshi versionCheck version file (such as version.php, composer.json, or a dedicated version info file) within the Hiroshi application directory, or query the application if it exposes version information via an endpointAffected if The version is 1.5.1 or lower, or if version cannot be determined but the application is confirmed as Hiroshi
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Verify PHP deserialization is in useSearch Hiroshi source code for usage of PHP deserialization functions such as unserialize(), json_decode() with object injection vectors, or similar data handling that processes untrusted serialized dataAffected if The application processes serialized PHP data from user input or untrusted sources without proper validation
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Confirm application is network-accessible without authenticationReview web server configuration, firewall rules, or access control lists to determine if the Hiroshi application endpoints are exposed to unauthenticated network accessAffected if The application or its API endpoints are accessible to unauthenticated users on the network
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Review application logs for injection attemptsExamine web server access logs and application logs for patterns indicating PHP object injection attempts, such as serialized PHP objects in request parameters or unusual serialized payloadsAffected if Suspicious serialized payloads are found in logs, especially from unauthenticated sources
The environment is affected if Hiroshi version 1.5.1 or below is installed, the application uses PHP deserialization on untrusted input, and it is accessible to unauthenticated users.
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 dataUpdate Hiroshi to the latest patched version if available; otherwise disable or remove the application until a fix is released. Implement a WAF with PHP deserialization detection rules as a temporary compensating control.
- 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-2026-39560 — 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-2026-39560 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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