BIT-DISCOURSE-2026-32620 Discourse: Missing post-level authorization allows whisper metadata disclosure

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content was exposed, only metadata about who read the post...

CVE-2026-32620

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

CVE-2026-32620

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

CVE-2026-32620

Summary: CVE-2026-32620 affects Discourse. From 2026.1.0-latest up to before 2026.1.3, 2026.2.0-latest up to before 2026.2.2, and 2026.3.0-latest up to before 2026.3.0, non-staff users could access read receipt metadata for staff-only posts they were not supposed to see. No post content was expos...

PT-2026-29311

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

Discourse 信息泄露漏洞

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an information disclosure vulnerability that stems from non-employee users having access to read receipt informati...

CVE-2023-42453

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event if they knew the room ID and event ID. Note that the users were not able to view the events, but simply mark it as read. This could be confusing as...

PT-2023-28352 · Synapse +2 · Synapse +2

Name of the Vulnerable Software and Affected Versions: Synapse versions prior to 1.93.0 Description: The issue allows users to forge read receipts for any event if they know the room ID and event ID. Although users cannot view the events, they can mark them as read, potentially causing confusion ...

Microsoft 365 Becomes Haven for BEC Innovation

Two fresh business email compromise BEC tactics have emerged onto the phishing scene, involving the manipulation of Microsoft 365 automated email responses in order to evade email security filters. In one case, scammers are targeting victims by redirecting legitimate out-of-office OOO replies fro...

Microsoft Outlook read receipt function vulnerability

Overview Microsoft Outlook contains a vulnerability in the read receipt function. Microsoft Outlook contains a vulnerability in the read receipt function. A read receipt may be sent unintentionally, notifying the sender that the email was received. Ayako Kozakai of NTT DATA SECURITY CORPORATION...

JVN#40382909: Microsoft Outlook read receipt function vulnerability

Microsoft Outlook contains a vulnerability in the read receipt function. A read receipt may be sent unintentionally, notifying the sender that the email was received. Impact A spam distributor may use this information to determine whether an email address is valid or not. Solution Upgrade the...

Becky! Internet Mail Read Receipt请求缓冲区溢出漏洞

BUGTRAQ ID: 33756 Becky! Internet Mail是一个常用的Email客户端软件。 Becky! Internet Mail客户端没有正确地处理read receipt请求。如果用户查看了特制的邮件并允许发送read receipt请求的话，就可以触发缓冲区溢出，导致执行任意代码。 RimArts Becky! Internet Mail 2.48.02 厂商补丁： RimArts ------- 目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载： http://www.rimarts.co.jp/index.html 在General...

JVN#29641290 Becky! Internet Mail buffer overflow vulnerability

Becky! Internet Mail is an email client software. Becky! Internet Mail contains a buffer overflow vulnerability as it does not properly handle read receipt requests. Impact If the user views a specially crafted email and allows a read receipt to be sent, arbitrary code may be executed. Solution...

CVE-2000-0216

Microsoft email clients in Outlook, Exchange, and Windows Messaging automatically respond to Read Receipt and Delivery Receipt tags, which could allow an attacker to flood a mail system with responses by forging a Read Receipt request that is redirected to a large distribution list...

EUVD-2000-0215

Microsoft email clients in Outlook, Exchange, and Windows Messaging automatically respond to Read Receipt and Delivery Receipt tags, which could allow an attacker to flood a mail system with responses by forging a Read Receipt request that is redirected to a large distribution list...

CVE-2000-0216

Affected software: Microsoft email clients (Outlook, Exchange, Windows Messaging). Vulnerability: servers/clients automatically respond to Read Receipt and Delivery Receipt tags. Root cause: auto-generated responses to receipt requests, enabling amplification by redirecting to a large distributio...

CVE-2000-0216

Microsoft email clients in Outlook, Exchange, and Windows Messaging automatically respond to Read Receipt and Delivery Receipt tags, which could allow an attacker to flood a mail system with responses by forging a Read Receipt request that is redirected to a large distribution list...