CVE-2026-2074Public exploitNetwork attack vector

Authenticated file disclosure via external entity resolution

Published Feb 7, 2026 · Updated Feb 7, 2026

XML external entity injection in O2OA 9.0.0 and earlier allows remote authenticated users to read server files through crafted XML. The mpweixin check POST handler accepts a DOCTYPE that loads an attacker-controlled DTD and resolves its external file entity instead of disabling DTD and entity resolution. Low-privileged access and no user interaction are required; successful requests can disclose server-local files and cause outbound HTTP requests.

CVSS severity6.3
Medium
EPSS probability0.28%
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 O2OA 9.0.0 and earlier allows remote authenticated users to read server files through crafted XML. The mpweixin check POST handler accepts a DOCTYPE that loads an attacker-controlled DTD and resolves its external file entity instead of disabling DTD and entity resolution. Low-privileged access and no user interaction are required; successful requests can disclose server-local files and cause outbound HTTP requests.

The record

CVE
CVE-2026-2074
Published
Feb 7, 2026
Updated
Feb 7, 2026
Vendor
Zhejiang Zoneland Zongheng Network Technology Co., Ltd.
Product
O2OA
Classifications
CWE-611, CWE-610, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2026Record 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=9.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zhejiang Zoneland Zongheng Network Technology Co., Ltd. · O2OAversion=9.0

Published CVSS scores

2.1VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.5VulDBAV:N/AC:L/Au:S/C:P/I:P/A:P
6.3VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
CWE-610Externally Controlled Reference to a Resource in Another Sphere
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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