Description
The 微信二维码登陆 WordPress plugin through 1.3 does not properly validate WeChat webhook requests, as its signature check always passes, and it discloses the generated login code in the webhook response. This allows an unauthenticated attacker to forge a login event for any existing username, read the login code, and redeem it through an unauthenticated AJAX action to log in as that user, including an administrator, without a password.
Published: 2026-07-27
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 28 Jul 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Markchenlife
Markchenlife qrcode-login-for-weixin
Wordpress
Wordpress wordpress
Vendors & Products Markchenlife
Markchenlife qrcode-login-for-weixin
Wordpress
Wordpress wordpress

Mon, 27 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 27 Jul 2026 06:30:00 +0000

Type Values Removed Values Added
Description The 微信二维码登陆 WordPress plugin through 1.3 does not properly validate WeChat webhook requests, as its signature check always passes, and it discloses the generated login code in the webhook response. This allows an unauthenticated attacker to forge a login event for any existing username, read the login code, and redeem it through an unauthenticated AJAX action to log in as that user, including an administrator, without a password.
Title QRcode Login for WeChat <= 1.3 - Unauthenticated Account Takeover
References

Subscriptions

Markchenlife Qrcode-login-for-weixin
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-07-27T13:52:26.324Z

Reserved: 2026-06-29T07:36:53.053Z

Link: CVE-2026-13597

cve-icon Vulnrichment

Updated: 2026-07-27T13:52:21.991Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-28T20:38:48Z

Weaknesses