What is CVE-2018-25082?

CVE-2018-25082 is a critical-severity XML external entity injection (XXE) vulnerability in weixin-python (pip), affecting versions < 0.5.5. It is fixed in 0.5.5. An XML parser processes external entity references in untrusted input, causing the server to fetch internal resources or remote URLs.

How severe is CVE-2018-25082?

CVE-2018-25082 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which versions of weixin-python are affected by CVE-2018-25082?

weixin-python (pip) versions < 0.5.5 is affected.

Is there a fix for CVE-2018-25082?

Yes. CVE-2018-25082 is fixed in 0.5.5. Upgrade to this version or later.

Is CVE-2018-25082 exploitable, and should I be worried?

Whether CVE-2018-25082 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2018-25082 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2018-25082 in weixin-python

Q: How severe is CVE-2018-25082?

CVE-2018-25082 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Q: Which versions of weixin-python are affected by CVE-2018-25082?

weixin-python (pip) versions < 0.5.5 is affected.

Q: Is there a fix for CVE-2018-25082?

Yes. CVE-2018-25082 is fixed in 0.5.5. Upgrade to this version or later.

Q: Is CVE-2018-25082 exploitable, and should I be worried?

Whether CVE-2018-25082 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2018-25082 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2018-25082?

Upgrade weixin-python to 0.5.5 or later.

Summary

weixin-python XML External Entity vulnerability

A vulnerability was found in zwczou WeChat SDK Python 0.3.0 and classified as critical. This issue affects the function validate/to_xml. The manipulation leads to xml external entity reference. The attack may be initiated remotely. Upgrading to version 0.5.5 is able to address this issue. The name of the patch is e54abadc777715b6dcb545c13214d1dea63df6c9. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-223403.

Impact

An XML parser processes external entity references in untrusted input, causing the server to fetch internal resources or remote URLs. Typical impact: local file disclosure, server-side request forgery, or denial of service.

CVE-2018-25082 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.5.5); upgrading removes the vulnerable code path.

Affected versions

weixin-python (< 0.5.5)

Security releases

weixin-python → 0.5.5 (pip)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Upgrade weixin-python to 0.5.5 or later to resolve this vulnerability.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2018-25082? CVE-2018-25082 is a critical-severity XML external entity injection (XXE) vulnerability in weixin-python (pip), affecting versions < 0.5.5. It is fixed in 0.5.5. An XML parser processes external entity references in untrusted input, causing the server to fetch internal resources or remote URLs.
How severe is CVE-2018-25082? CVE-2018-25082 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which versions of weixin-python are affected by CVE-2018-25082? weixin-python (pip) versions < 0.5.5 is affected.
Is there a fix for CVE-2018-25082? Yes. CVE-2018-25082 is fixed in 0.5.5. Upgrade to this version or later.
Is CVE-2018-25082 exploitable, and should I be worried? Whether CVE-2018-25082 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2018-25082 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2018-25082? Upgrade weixin-python to 0.5.5 or later.