CVE-2026-13597Network attack vector

Unauthenticated account takeover via forged WeChat webhooks

Published Jul 27, 2026 · Updated Jul 27, 2026

Authentication bypass in markchenlife 微信二维码登陆 1.3 and earlier allows remote attackers to take over any existing WordPress account. The checkSignature() method accepts every WeChat webhook, and the response returns the generated login code to its requester. An unauthenticated attacker can submit an existing username and redeem the disclosed code through the public AJAX action, including for an administrator.

CVSS severityUnavailable
Unscored
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in markchenlife 微信二维码登陆 1.3 and earlier allows remote attackers to take over any existing WordPress account. The checkSignature() method accepts every WeChat webhook, and the response returns the generated login code to its requester. An unauthenticated attacker can submit an existing username and redeem the disclosed code through the public AJAX action, including for an administrator.

The record

CVE
CVE-2026-13597
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
markchenlife
Product
微信二维码登陆
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 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=0 <=1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

markchenlife · 微信二维码登陆version=0 <=1.3

Published CVSS scores

No CVSS assessment is available in this record.

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-287Improper Authentication
T1190Exploit Public-Facing Application

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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