CVE-2022-27193

Local file disclosure via resolved XML entities

Published Mar 15, 2022 · Updated Aug 3, 2024

XXE in CVRF-CSAF-Converter before 1.0.0-rc2 allows attackers to disclose local files through crafted XML input. The _open_and_validate_file method passed input directly to lxml.objectify.parse, whose default parser resolved external entities and embedded referenced file contents in the generated document. Exploitation requires a user to process the attacker-supplied XML and expose the resulting output; the demonstrated consequence is local-file disclosure.

CVSS severity5.5
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in CVRF-CSAF-Converter before 1.0.0-rc2 allows attackers to disclose local files through crafted XML input. The _open_and_validate_file method passed input directly to lxml.objectify.parse, whose default parser resolved external entities and embedded referenced file contents in the generated document. Exploitation requires a user to process the attacker-supplied XML and expose the resulting output; the demonstrated consequence is local-file disclosure.

The record

CVE
CVE-2022-27193
Published
Mar 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1005
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N
6.1GitHub Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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