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CVE-2026-77807— AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 11.0.4 - Unauthenticated Arbitrary File Read via 'user[name]' Parameter

Quick assessment

Affected
acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress AcyMailing是WordPress基金会的一款邮件订阅管理插件。 WordPress AcyMailing 11.0.4及之前版本存在路径遍历漏洞，该漏洞源于user[name]参数存在目录遍历，可能导致未经身份验证的攻击者读取服务器上的任意文件，泄露敏感信息。

CVSS 7.5 · High EPSS 0.93% · P60

Affected Version Matrix 1

VendorProduct Version RangeStatus
acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress ≤ 11.0.4 affected
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I. Basic Information for CVE-2026-77807

Vulnerability Information
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Vulnerability Title
AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress <= 11.0.4 - Unauthenticated Arbitrary File Read via 'user[name]' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 11.0.4 via the `user[name]` Parameter. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires "Embed images" option in AcyMailing configuration being enabled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress AcyMailing 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress AcyMailing是WordPress基金会的一款邮件订阅管理插件。 WordPress AcyMailing 11.0.4及之前版本存在路径遍历漏洞，该漏洞源于user[name]参数存在目录遍历，可能导致未经身份验证的攻击者读取服务器上的任意文件，泄露敏感信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress 0 ~ 11.0.4 -

II. Public POCs for CVE-2026-77807

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III. Intelligence Information for CVE-2026-77807

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Patches & Fixes for CVE-2026-77807 (1)

Other References for CVE-2026-77807 (1)

IV. Related Vulnerabilities

Same product: AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress
Same vendor: acyba
Same weakness: CWE-22