CVE-2023-27480Public exploitNetwork attack vector

Host file disclosure via unrestricted XAR DOCTYPE

Published Mar 7, 2023 · Updated Feb 25, 2025

XXE in XWiki Platform allows remote authenticated users with document edit rights to read host files through a forged XAR import. XarPackage.readDescriptor passes the attacker-controlled package.xml descriptor to a DocumentBuilderFactory that permits DOCTYPE declarations and resolves external file entities. The attacker must attach the archive to an editable document and invoke the import sheet; exploitation discloses readable server files without reported data modification or service interruption.

CVSS severity7.7
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in XWiki Platform allows remote authenticated users with document edit rights to read host files through a forged XAR import. XarPackage.readDescriptor passes the attacker-controlled package.xml descriptor to a DocumentBuilderFactory that permits DOCTYPE declarations and resolves external file entities. The attacker must attach the archive to an editable document and invoke the import sheet; exploitation discloses readable server files without reported data modification or service interruption.

The record

CVE
CVE-2023-27480
Published
Mar 7, 2023
Updated
Feb 25, 2025
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-611, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 1.1-milestone-3, < 13.10.11
  2. Affected versionversion=>= 14.0.0, < 14.4.7
  3. Affected versionversion=>= 14.5.0, < 14.10.0-rc-1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=>= 1.1-milestone-3, < 13.10.11; version=>= 14.0.0, < 14.4.7; version=>= 14.5.0, < 14.10.0-rc-1

Published CVSS scores

7.7GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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