CVE-2018-25082Network attack vector

Resource access via enabled external XML entities

Published Mar 21, 2023 · Updated Feb 26, 2025

XXE in zwczou weixin-python before 0.5.5 allows remote attackers to access parser-reachable resources through crafted XML input. The message parse and payment to_dict paths passed untrusted XML to lxml.etree.fromstring without disabling external-entity resolution. Exploitation requires a host application to route attacker-controlled WeChat message or payment XML into the SDK, exposing files or network resources available to that process.

CVSS severity9.8
Critical
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in zwczou weixin-python before 0.5.5 allows remote attackers to access parser-reachable resources through crafted XML input. The message parse and payment to_dict paths passed untrusted XML to lxml.etree.fromstring without disabling external-entity resolution. Exploitation requires a host application to route attacker-controlled WeChat message or payment XML into the SDK, exposing files or network resources available to that process.

The record

CVE
CVE-2018-25082
Published
Mar 21, 2023
Updated
Feb 26, 2025
Vendor
zwczou
Product
weixin-python
Classifications
CWE-611
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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=0.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

zwczou · weixin-pythonversion=0.3.0

Published CVSS scores

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference

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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