CVE-2023-27527
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 · uneditedShinseiyo Sogo Soft (7.9A) and earlier improperly restricts XML external entity references (XXE). By processing a specially crafted XML file, arbitrary files on the PC may be accessed by an attacker.
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 confidenceShinseiyo Sogo Soft versions 7.9A and earlier contains an XML External Entity (XXE) injection vulnerability. The application improperly restricts XML external entity references when processing XML files, allowing an attacker to craft malicious XML that references external entities to read arbitrary files from the server's filesystem.
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<= 7.9aCVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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 the installed version of Touki Kyoutaku Online Shinseiyo Sogo SoftLocate the application in your environment and check its version information. This is typically found in the software's about dialog, installation directory, or system inventory. Compare your version against the affected range: <= 7.9aAffected if The installed version is 7.9a or earlier (7.9A and versions below)
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Determine if XML file upload or processing functionality existsIdentify whether the application has features that accept, parse, or process XML files. This may include XML import, configuration file loading, data interchange modules, or API endpoints that handle XML payloads. Review the application's feature documentation or enumerate accessible endpoints.Affected if The application processes XML files from users or external sources without restricting external entity references
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Check XML parser configuration for external entity settingsIf you have access to the application's configuration files or XML processing libraries, inspect the XML parser settings. Look for whether the parser is configured to allow external entity resolution or DTD processing. The specific configuration file or setting depends on the application's implementation.Affected if The XML parser has external entity processing enabled (not disabled)
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Verify network exposure of XML processing endpointsDetermine if XML processing functionality is accessible over the network. This could include web services, APIs, or any network-accessible interface that accepts XML input. Document which endpoints accept XML content.Affected if XML processing functionality is exposed to network users or external systems
You are affected if the installed version is 7.9a or earlier AND the application has XML file processing capabilities exposed to users or external sources.
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 dataDisable external entity processing in the XML parser configuration, implement input validation for XML files, and upgrade to a patched version if available from the vendor.
- Consultation4.0 h
- Implementation4.0 h
- Testing6.0 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 $4,736.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-27527 — 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-2023-27527 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