CVE-2026-76794: MongoDB BI Connector Transition Readiness Report Improper HTML Encoding When Processing Database Metadata

Severity: medium (CVSS 4.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-28 · updated 2026-09-17
Weakness: CWE-79

Description

MongoSQL Transition Readiness Tool does not sufficiently encode database metadata before including it in generated HTML. A MongoDB user with write access can introduce crafted metadata that may cause script code to run when another user generates and opens the report, potentially exposing report contents or altering its display.

Affected products

MongoDB BI Connector Transition Readiness Report: before 1.1.3 — fixed in 1.1.3

How to fix

Upgrade to a fixed version: MongoDB BI Connector Transition Readiness Report 1.1.3. Check the vendor advisory for mitigations.

References

https://www.mongodb.com/docs/sql-interface/changelog/

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