Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-5266

Quick assessment

Affected
Wikimedia Foundation Echo
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.

Wikimedia Echo是Wikimedia基金会的一个提供站内通知与用户提醒功能的消息通知扩展。 Wikimedia Echo存在信息泄露漏洞，该漏洞源于程序文件includes/Api/ApiEchoNotifications.Php中的敏感信息泄露。以下版本受到影响：1.43.7之前版本、1.44.4版本和1.45.2版本。

AI Predicted 5.3 Difficulty: Easy EPSS 0.38% · P30

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Wikimedia Foundation Echo *< 1.43.7, 1.44.4, 1.45.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-5266

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Echo. This vulnerability is associated with program files includes/Api/ApiEchoNotifications.Php. This issue affects Echo: from * before 1.43.7, 1.44.4, 1.45.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Wikimedia Echo 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Wikimedia Echo是Wikimedia基金会的一个提供站内通知与用户提醒功能的消息通知扩展。 Wikimedia Echo存在信息泄露漏洞，该漏洞源于程序文件includes/Api/ApiEchoNotifications.Php中的敏感信息泄露。以下版本受到影响：1.43.7之前版本、1.44.4版本和1.45.2版本。
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
Wikimedia Foundation Echo * ~ 1.43.7, 1.44.4, 1.45.2 -

II. Public POCs for CVE-2026-5266

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-5266

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-5266 (1)

Same Patch Batch · Wikimedia Foundation · 2026-05-11 · 11 CVEs total

CVE-2026-34090 Suggested investigations: Handle suppressed usernames
CVE-2026-34089 Memory leak in Scribunto causes runJobs.php to run out of memory
CVE-2026-34092 Block UI elements in 'tools'-sidebar shows presence of an autoblocked IP
CVE-2026-34091 User localization leaked by AbuseFilter + EventStream
CVE-2026-34086 AbuseFilter misuses ::userCanBitfield, exposing access-controlled information
CVE-2026-34087 Users API leaks whether privileged users have their user groups disabled for lack of 2FA
CVE-2026-34093 Special:UserRights allows viewing user rights from private wiki
CVE-2026-34094 Customized help link for page protection indicator is relative to subpage name, because th
CVE-2026-34095 action=raw with Special:Mypage subpage title responds with "Content-Type: text/html" on ct
CVE-2026-34088 RecentChanges entries expose suppressed content via generated log page html

IV. Related Vulnerabilities

Same product: Echo
Same vendor: Wikimedia Foundation
Same weakness: CWE-200

V. Comments for CVE-2026-5266

No comments yet

Leave a comment