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CVE-2026-49277— Rocket.Chat: OAuth access and refresh tokens remain valid after account deactivation

Quick assessment

Affected
RocketChat Rocket.Chat
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.

RocketChat rocket.chat是巴西RocketChat公司开源的一款团队协作即时通讯平台。 Rocket.Chat存在会话机制问题漏洞，该漏洞源于用户停用时未撤销OAuth承载或刷新令牌，已停用用户可以继续使用现有OAuth访问令牌，并可使用现有刷新令牌生成新的访问令牌。以下版本受到影响：7.10.12及之前版本、7.13.8版本之前的7.11.x版本、8.0.6版本之前的8.0.x版本、8.1.5版本之前的8.1.x版本、8.2.4版本之前的8.2.x版本、8.3.4版本之前的8.3.x

AI Predicted 6.5 Difficulty: Trivial EPSS 0.31% · P23

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 8

VendorProduct Version RangeStatus
RocketChat Rocket.Chat >= 8.5.0-rc.0, < 8.5.0 affected
>= 8.4.0-rc.0, < 8.4.2 affected
>= 8.3.0-rc.0, < 8.3.4 affected
>= 8.2.0-rc.0, < 8.2.4 affected
>= 8.1.0-rc.0, < 8.1.5 affected
>= 8.0.0-rc.0, < 8.0.6 affected
>= 7.11.0-rc.0, < 7.13.8 affected
< 7.10.12 affected
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I. Basic Information for CVE-2026-49277

Vulnerability Information
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Vulnerability Title
Rocket.Chat: OAuth access and refresh tokens remain valid after account deactivation
Source: CVE Program / CVE List V5
Vulnerability Description
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, Rocket.Chat does not revoke OAuth bearer or refresh tokens when a user is deactivated. A deactivated user can continue using an existing OAuth access token, and can also mint a fresh access token from an existing refresh token. This vulnerability is fixed in 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Rocket.Chat 会话机制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RocketChat rocket.chat是巴西RocketChat公司开源的一款团队协作即时通讯平台。 Rocket.Chat存在会话机制问题漏洞，该漏洞源于用户停用时未撤销OAuth承载或刷新令牌，已停用用户可以继续使用现有OAuth访问令牌，并可使用现有刷新令牌生成新的访问令牌。以下版本受到影响：7.10.12及之前版本、7.13.8版本之前的7.11.x版本、8.0.6版本之前的8.0.x版本、8.1.5版本之前的8.1.x版本、8.2.4版本之前的8.2.x版本、8.3.4版本之前的8.3.x
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
RocketChat Rocket.Chat >= 8.5.0-rc.0, < 8.5.0 -

II. Public POCs for CVE-2026-49277

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III. Intelligence Information for CVE-2026-49277

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Vendor Advisories for CVE-2026-49277 (1)

Same Patch Batch · RocketChat · 2026-06-24 · 12 CVEs total

CVE-2026-45688 9.1 CRITICAL Rocket.Chat: Pre-Auth NoSQL Injection in CAS Login Handler leading to Arbitrary CAS/SAML U
CVE-2026-45689 9.1 CRITICAL Rocket.Chat: Pre-Auth NoSQL Injection in OAuth2 Token Endpoint leading to Arbitrary User A
CVE-2026-45687 8.5 HIGH Rocket.Chat: Authenticated Arbitrary Data Export Theft via Mass Assignment in sendFileMess
CVE-2026-55762 8.1 HIGH Rocket.Chat: Any Authenticated User Can Permanently Deregister Workspace from Rocket.Chat
CVE-2026-55759 7.4 HIGH Rocket.Chat: Apple Sign-In skips JWT claims validation, allowing expired and cross-audienc
CVE-2026-49278 6.7 MEDIUM Rocket.Chat: Livechat Visitor Profile Disclosure Leaks Bearer Token and Enables Visitor Im
CVE-2026-47733 4.4 MEDIUM Rocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in
CVE-2026-45677 Rocket.Chat: Lack of SAML Signature Check During Logout Could Lead To DoS
CVE-2026-45757 Rocket.Chat: users.deactivateIdle` deactivates accounts without revoking existing login to
CVE-2026-46423 Rocket.Chat: SAML signature validation skipped when IdP certificate field is empty
CVE-2026-55666 Rocket.Chat: Email Parameter Fallback Leads To Account Takeover Within Apple OAuth

IV. Related Vulnerabilities

Same product: Rocket.Chat
Same vendor: RocketChat
Same weakness: CWE-613

V. Comments for CVE-2026-49277

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