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CVE-2013-0340

XML External Entity (XXE): Is CVE-2013-0340 real, exploitable, or a false positive? Here's the community verdict.

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signals

public sources

Exploited in wild
Not listed
CISA KEV
Public exploit
None known
Metasploit/EDB/PoC
Base severity
6.8 Medium
CVSS
Exploitation prob.
20%
FIRST EPSS
Weakness
CWE-611 · XML External Entity (XXE)
CWE

Moderate signals. Triage by your actual exposure and reachability.

scanner noise

anonymous, aggregated from real reports · via Denoizr
ScannerFlagged inTurned out noise
Wiz1 scan0%

How often this CVE was flagged by each scanner and how much turned out to be noise (false positives), aggregated anonymously from de-noised reports. Higher noise means the alert is more often not a real risk — verify your exposure.

baseline read

auto · not a community verdict

Officially disputed

The CVE record itself is disputed or rejected upstream — a strong candidate for a false positive in scanners. Confirm with a verdict.

Based on NVD record status

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Affected:Libexpat ProjectPythonApple

AV:N/AC:M/Au:N/C:P/I:P/A:P

expat before version 2.4.0 does not properly handle entities expansion unless an application developer uses the XML_SetEntityDeclHandler function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because expat already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed, and each affected application would need its own CVE.

References

NVD MITRE CVE.org

Published

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Community ground truth

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In your experience, is this finding real and exploitable?

awaiting field verdicts
Real, but not a risk here
Not a real issue

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Field notes & remediation

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  • 0
    Field note · TruePositive EditorialCurated

    No confirmed in-the-wild exploitation or public exploit was found for this yet. FIRST EPSS estimates about a 20% chance of exploitation in the next 30 days, which is high relative to most CVEs.

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Related CVEs

Same weakness: CWE-611 · XML External Entity (XXE).