CVE-2026-1227
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 · uneditedCWE-611: Improper Restriction of XML External Entity Reference vulnerability exists that could cause unauthorized disclosure of local files, interaction within the EBO system, or denial of service conditions when a local user uploads a specially crafted TGML graphics file to the EBO server from Workstation.
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 confidenceThis is a CWE-611 XXE (XML External Entity) vulnerability in the EBO system's TGML graphics file upload functionality. When a local user uploads a specially crafted TGML file containing malicious XML external entity declarations, the parser can be tricked into disclosing local files from the server, interacting with internal systems, or causing denial of service.
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
- Local
- Complexity
- Low
- Privileges
- Low
- Authentication
- X
- User interaction
- P
- Scope
- X
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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 TGML upload feature availabilityLocate the TGML file upload functionality in the EBO system administrative interface or API endpoints. Check for file upload forms or APIs that accept .tgml file extensions.Affected if The TGML file upload feature exists and is accessible to users
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Determine EBO system versionCheck the installed EBO system version through the system administrative panel, about page, or by querying the system information endpoint. Compare this version against any released version history.Affected if The installed version cannot be verified as patched or is within an unpatched release range
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Verify XML parser XXE protection configurationLocate the TGML parser or XML processor configuration files in the EBO system directory. Inspect the parser settings for features such as 'external-entity', 'dtd-validation', or similar XML processing flags.Affected if XML external entity processing is enabled or not explicitly disabled in the parser configuration
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Check TGML file type validationInspect the file upload validation logic for TGML files. Look for file content validation, magic byte checking, or XML schema validation that occurs before parsing.Affected if Uploaded TGML files are accepted without content-type validation or XML structure verification
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Test for XXE vulnerability with safe probeCreate a minimal TGML file containing a benign external entity reference (such as referencing a local file known to exist) and attempt to upload it. Observe if the parser resolves and returns the entity content.Affected if The parser resolves external entity references and returns file contents from the server
A user is affected if the TGML file upload feature is enabled and the XML parser does not have external entity processing disabled, allowing uploaded TGML files to trigger XXE behavior.
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 XML external entity processing in the TGML file parser configuration, implement strict input validation for uploaded files, and use a secure XML parser with entity expansion limits enabled.
- Consultation3.0 h
- Implementation6.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-1227 — 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-2026-1227 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
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