CVE-2026-66750-Insufficient-Access-Controls-Allow-for-Unauthorized-File-Downloads-Let-s-Chat-

安全公告：访问控制不足允许未经授权的文件下载（Let's Chat） 分配的 CVE 编号： CVE-2026-66750 摘要 GET /files/:id/:name 会检查调用者是否已登录，然后提供该文件。它从不检查调用者是否有权查看该文件所属的房间。 因此，任何账户都可以读取其未加入的私有房间和密码保护房间中的附件，而已被撤销房间访问权限的用户仍可继续使用其拥有访问权限期间上传的所有文件的有效下载链接。 同一控制器中的文件列表端点确实会检查成员资格，而下载端点缺少的正是这一检查。 受影响版本 仓库 URL：https://github.com/sdelements/lets-ch...

CVE-2026-66751

Let's Chat 0.3.0 through 0.4.8 contains an improper authorization vulnerability that allows any authenticated user to archive any room on the server by sending a DELETE request to the rooms handler without ownership verification. Attackers can enumerate room IDs via the rooms listing endpoint and...

CVE-2026-66750

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can...

CVE-2026-66751

CVE-2026-66751 affects Let’s Chat 0.3.0–0.4.8. The issue is an improper authorization in the server’s room deletion flow: any authenticated user can archive any room by sending a DELETE to the rooms handler without ownership verification. Attackers can enumerate room IDs via the rooms listing end...

CVE-2026-66751 Let's Chat 0.3.0 - 0.4.8 Improper Authorization via DELETE /rooms/:room

Let's Chat 0.3.0 through 0.4.8 contains an improper authorization vulnerability that allows any authenticated user to archive any room on the server by sending a DELETE request to the rooms handler without ownership verification. Attackers can enumerate room IDs via the rooms listing endpoint and...

EUVD-2026-49876

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can...

CVE-2026-66750 Let's Chat 0.3.0 - 0.4.8 Broken Access Control File Disclosure via GET /files route

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can...

CVE-2026-66750 Let's Chat 0.3.0 - 0.4.8 Broken Access Control File Disclosure via GET /files route

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can...

CVE-2026-66750 Let's Chat 0.3.0 - 0.4.8 Broken Access Control File Disclosure via GET /files route

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can...

PT-2026-65521

Let's Chat 0.3.0 through 0.4.8 contains an improper authorization vulnerability that allows any authenticated user to archive any room on the server by sending a DELETE request to the rooms handler without ownership verification. Attackers can enumerate room IDs via the rooms listing endpoint and...

PT-2026-65520

Let's Chat 0.3.0 through 0.4.8 contains a broken access control vulnerability that allows authenticated attackers to download file attachments from private and password-protected rooms they are not a member of by exploiting missing room membership checks in the file retrieval route. Attackers can...

EUVD-2020-3024

Malware in sbrugna...

CVE-2023-29529

matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker...

UBUNTU-CVE-2023-29529

matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker...

Race condition

matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker...

CVE-2023-29529

Removed by vendor...

CVE-2023-29529 matrix-js-sdk vulnerable to invisible eavesdropping in group calls

matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker...

CVE-2023-29529 matrix-js-sdk vulnerable to invisible eavesdropping in group calls

matrix-js-sdk is the Matrix Client-Server SDK for JavaScript and TypeScript. An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker...

matrix-js-sdk vulnerable to invisible eavesdropping in group calls

Impact An attacker present in a room where an MSC3401 group call is taking place can eavesdrop on the video and audio of participants using matrix-js-sdk, without their knowledge. To affected matrix-js-sdk users, the attacker will not appear to be participating in the call. This attack is possibl...

py-matrix-synapse -- several vulnerabilities

Matrix developers report: This release patches two moderate severity issues which could reveal metadata about private rooms: CVE-2021-39164: Enumerating a private room's list of members and their display names. CVE-2021-39163: Disclosing a private room's name, avatar, topic, and number of members...