CVE-2023-26470Network attack vector

Farm-wide denial of service via sparse object numbering

Published Mar 2, 2023 · Updated Mar 5, 2025

Uncontrolled resource consumption in XWiki Platform before 14.0-rc-1 allows remote authenticated users to cause persistent service outages. XWikiDocument stores page objects in a list and pads every missing index with null entries when an object number exceeds the current size. An account with page-editing rights can save one extreme object number, exhaust heap memory, and leave the farm repeatedly unusable whenever that document is handled.

CVSS severity5.7
Medium
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled resource consumption in XWiki Platform before 14.0-rc-1 allows remote authenticated users to cause persistent service outages. XWikiDocument stores page objects in a list and pads every missing index with null entries when an object number exceeds the current size. An account with page-editing rights can save one extreme object number, exhaust heap memory, and leave the farm repeatedly unusable whenever that document is handled.

The record

CVE
CVE-2023-26470
Published
Mar 2, 2023
Updated
Mar 5, 2025
Vendor
CryptPad
Product
XWiki Platform
Classifications
CWE-787, CWE-400, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=< 14.0-rc-1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CryptPad · XWiki Platformversion=< 14.0-rc-1

Published CVSS scores

5.7GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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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