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PatchSiren cyber security CVE debrief

CVE-2026-29198 Rocket.Chat CVE debrief

A NoSQL injection vulnerability exists in Rocket.Chat versions before 8.3.0, 8.2.1, 8.1.2, 8.0.3, 7.13.5, 7.12.6, 7.11.6, and 7.10.9. This vulnerability can lead to account takeover of the first user with a generated token when an OAuth app is configured. The vulnerability is a result of inadequate input validation and sanitization, allowing attackers to inject malicious NoSQL queries. Defenders should assess their exposure and consider upgrading to a patched version to prevent potential account takeover and unauthorized access.

Vendor
Rocket.Chat
Product
Unknown
CVSS
CRITICAL 9.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-23
Original CVE updated
2026-10-23
Advisory published
2026-04-23
Advisory updated
2026-10-23

Who should care

Defenders responsible for Rocket.Chat deployments, especially those using versions prior to 8.3.0, should assess their exposure and consider upgrading to a patched version.

Why it matters

Defenders should prioritize verifying exposure and assessing the vulnerability in their Rocket.Chat deployments, especially for versions prior to 8.3.0, and consider upgrading to a patched version to prevent potential account takeover and unauthorized access.

  • Account takeover of the first user with a generated token
  • Potential unauthorized access to Rocket.Chat instances

Technical summary

The vulnerability exists in Rocket.Chat versions before 8.3.0, 8.2.1, 8.1.2, 8.0.3, 7.13.5, 7.12.6, 7.11.6, and 7.10.9. It is a NoSQL injection vulnerability that can lead to account takeover of the first user with a generated token when an OAuth app is configured.

Defensive priority

Defenders should prioritize verifying exposure and assessing the vulnerability in their Rocket.Chat deployments, especially for versions prior to 8.3.0, and consider upgrading to a patched version.

Recommended defensive actions

  • Verify Rocket.Chat version and assess exposure
  • Upgrade to a patched version if vulnerable
  • Review OAuth app configurations

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its CVSS score and affected versions. The vulnerability was reported by a third-party researcher and is tracked in the Rocket.Chat issue tracker. The CVE record has not been modified since its publication on 2026-04-23T00:16:45.060Z. Defenders should verify the affected versions and review OAuth app configurations to mitigate the vulnerability.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-29198 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-29198

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-29198 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-29198

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.