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

CVSS 5.4 · Medium EPSS 0.21% · P12

Affected Version Matrix 2

VendorProductVersion RangeStatus
sdelementslets-chat0.3.0≤ 0.4.8affected
5b5f46f92696955c27864dbca8b33b5b6a39a502≤ 617207ff3c0c0bf8e3c7a915bd9ec03f1dd8390caffected
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I. Basic Information for CVE-2026-66751

Vulnerability Information
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Vulnerability Title
Let's Chat 0.3.0 - 0.4.8 Improper Authorization via DELETE /rooms/:room
Source: CVE Program / CVE List V5
Vulnerability Description
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 permanently archive private or password-protected rooms they cannot access, with no application-level recovery path requiring direct database intervention to restore.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
sdelements lets-chat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sdelements lets-chat是sdelements个人开发者开源的一个团队协作聊天软件。 sdelements lets-chat 0.3.0版本至0.4.8版本存在授权问题漏洞，该漏洞源于授权不当，允许任何经过身份验证的用户在无所有权验证的情况下向rooms handler发送DELETE请求归档服务器上的任意房间，攻击者可通过rooms listing端点枚举房间ID并永久归档私有或受密码保护的房间，且无应用级恢复路径。
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

VendorProductAffected VersionsCPESubscribe
sdelementslets-chat 0.3.0 ~ 0.4.8 -

II. Public POCs for CVE-2026-66751

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III. Intelligence Information for CVE-2026-66751

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Vendor Advisories for CVE-2026-66751 (1)

Proof of Concept for CVE-2026-66751 (1)

Same Patch Batch · sdelements · 2026-07-28 · 3 CVEs total

CVE-2026-667496.5 MEDIUMLet's Chat 0.4.0 - 0.4.8 Denial of Service via Null Dereference in Room Lookup
CVE-2026-667504.3 MEDIUMLet's Chat 0.3.0 - 0.4.8 Broken Access Control File Disclosure via GET /files route

IV. Related Vulnerabilities

Same product: lets-chat
Same vendor: sdelements
Same weakness: CWE-862

V. Comments for CVE-2026-66751

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