CVE-2025-65868Public exploitNetwork attack vector

Service interruption via unbounded XML entity expansion

Published Dec 3, 2025 · Updated Dec 5, 2025

XML external entity injection in EyouCMS 1.7.1 allows remote attackers to exhaust server CPU via crafted XML POST requests. The front-end request path reaches core/library/think/Controller.php line 340, which accepts entity declarations and expands repeated references without an effective resource bound. Unauthenticated production-mode access is sufficient, but complete CPU exhaustion requires several dozen concurrent requests.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XML external entity injection in EyouCMS 1.7.1 allows remote attackers to exhaust server CPU via crafted XML POST requests. The front-end request path reaches core/library/think/Controller.php line 340, which accepts entity declarations and expands repeated references without an effective resource bound. Unauthenticated production-mode access is sufficient, but complete CPU exhaustion requires several dozen concurrent requests.

The record

CVE
CVE-2025-65868
Published
Dec 3, 2025
Updated
Dec 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-611, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
7.5NVDCVSS: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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1499.004Application or System Exploitation

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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