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CVE-2026-11907— Stream <= 4.2.0 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure via Heartbeat API

Quick assessment

Affected
xwp Stream – Activity Log & Audit Trail
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 Stream 插件在所有 4.2.0 及以下版本中存在授权绕过漏洞。该漏洞是由于插件未正确验证用户是否被授权执行特定操作所致。这使得具有订阅者级别及以上权限的已认证攻击者能够通过 Heartbeat API 访问所有的 Stream 活动记录。

CVSS 6.5 · Medium EPSS 0.23% · P14

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
xwp Stream – Activity Log & Audit Trail ≤ 4.2.0 affected
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I. Basic Information for CVE-2026-11907

Vulnerability Information
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Vulnerability Title
Stream <= 4.2.0 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure via Heartbeat API
Source: CVE Program / CVE List V5
Vulnerability Description
The Stream plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.2.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to access all Stream activity records via the Heartbeat API.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
xwp Stream – Activity Log & Audit Trail 0 ~ 4.2.0 -

II. Public POCs for CVE-2026-11907

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III. Intelligence Information for CVE-2026-11907

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Patches & Fixes for CVE-2026-11907 (1)

Vendor Advisories for CVE-2026-11907 (1)

IV. Related Vulnerabilities

Same vendor: xwp
Same weakness: CWE-862

V. Comments for CVE-2026-11907

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