RocketChat Rocket.Chat up to 8.4.x data query logic injection

Summaryinfo

A vulnerability categorized as critical has been discovered in RocketChat Rocket.Chat up to 8.4.x. This affects an unknown part. The manipulation results in data query logic injection. This vulnerability is cataloged as CVE-2026-45688. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in RocketChat Rocket.Chat up to 8.4.x. Affected is an unknown functionality. The manipulation with an unknown input leads to a data query logic injection vulnerability. CWE is classifying the issue as CWE-943. The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's CAS login handler forwards the client-supplied options.cas.credentialToken value straight into a MongoDB findOne({_id: ...}) query without any runtime type check. TypeScript's string parameter annotation is erased at runtime, so an unauthenticated attacker can substitute a MongoDB query operator ({"$gt": ""}, {"$ne": null}, etc.) for what the server expects to be an opaque ticket string. The injected operator matches the first unexpired document in the credential_tokens collection, bypassing the CAS ticket check entirely. When any legitimate CAS or SAML SSO login is in flight, the attacker's next DDP login call matches the same credential-token row via the NoSQL operator and is issued a full Meteor auth token (userId + token) bound to the victim. The token is immediately usable against the complete REST and DDP surface as that user. If the victim is an administrator, this escalates to full instance compromise via Apps-Engine app install. This vulnerability is fixed in 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-45688 since 05/13/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 7.10.11, 7.13.7, 8.0.5, 8.1.4, 8.2.3, 8.3.3, 8.4.1 or 8.5.0 eliminates this vulnerability.

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Productinfo

Type

• Chat Software

Vendor

• RocketChat

Name

• Rocket.Chat

Version

• 7.10.0
• 7.10.1
• 7.10.2
• 7.10.3
• 7.10.4
• 7.10.5
• 7.10.6
• 7.10.7
• 7.10.8
• 7.10.9
• 7.10.10
• 7.13.0
• 7.13.1
• 7.13.2
• 7.13.3
• 7.13.4
• 7.13.5
• 7.13.6
• 8.0
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.1
• 8.1.0
• 8.1.1
• 8.1.2
• 8.1.3
• 8.2
• 8.2.0
• 8.2.1
• 8.2.2
• 8.3
• 8.3.0
• 8.3.1
• 8.3.2
• 8.4
• 8.4.0

License

• free

Website

• Product: https://github.com/RocketChat/Rocket.Chat/

CPE 2.3info

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CPE 2.2info

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