CVE-2024-36827
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 · uneditedAn XML External Entity (XXE) vulnerability in the ebookmeta.get_metadata function of ebookmeta before v1.2.8 allows attackers to access sensitive information or cause a Denial of Service (DoS) via crafted XML input.
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 · high confidenceThe ebookmeta.get_metadata function in ebookmeta versions before v1.2.8 processes XML input (likely from ebook file formats like EPUB) without proper sanitization, allowing XML External Entity (XXE) injection. Attackers can craft malicious XML that references external entities to read local files from the server filesystem or cause Denial of Service through recursive entity expansion attacks.
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< 1.2.8CVSS 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 ebookmeta installationRun 'pip show ebookmeta' or check your project's requirements.txt/dependencies for the ebookmeta packageAffected if ebookmeta is present and the version is below 1.2.8
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Verify the vulnerable function usageSearch your codebase for calls to ebookmeta.get_metadata function, particularly with input from EPUB files or other XML-containing ebook formatsAffected if Your code calls get_metadata on untrusted EPUB or XML input files
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Inspect XML processing behaviorMonitor or review how ebookmeta parses XML within EPUB files - check if external entity processing is enabled in the XML parser being usedAffected if The XML parser allows external entity resolution or doctype declarations when processing ebook metadata
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Test for XXE vulnerabilityCreate a minimal test EPUB with a malicious XML metadata file containing an external entity reference (e.g., <!ENTITY xxe SYSTEM "file:///etc/passwd">) and run get_metadata on itAffected if The function returns content from external files or experiences denial of service from recursive entity expansion
You are affected if ebookmeta version is below 1.2.8 and your application processes EPUB or other XML-based ebook files through the get_metadata function with untrusted 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 · scoped1.2.8
Update ebookmeta to version 1.2.8 or later, which contains the XXE fix. Alternatively, if updating is not immediately possible, configure XML parsers to disable external entity processing and doctype declarations.
1.2.8
- Check the currently installed version of ebookmeta using pip show ebookmeta or your package manager
- Upgrade ebookmeta to version 1.2.8 or later using: pip install ebookmeta>=1.2.8
- Verify the new version is installed correctly using pip show ebookmeta
- If applicable, test that the ebookmeta.get_metadata function works correctly with your existing workflows
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing4.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-36827 — 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-2024-36827 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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