MongoSQL Transition Readiness Tool Improper Output Encoding in Generated HTML Reports (CVE-2026-76798) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-76798

MongoSQL Transition Readiness Tool Improper Output Encoding in Generated HTML Reports

Answer in brief

CVE-2026-76798 records a Unknown severity vulnerability in MongoSQL Transition Readiness Tool Improper Output Encoding in Generated HTML Reports. The current sources do not mark it as known exploited. The current feed maps MongoDB/BI Connector Transition Readiness Report (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MongoDB/BI Connector Transition Readiness Report (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MongoDB/BI Connector Transition Readiness Reportgeneric	>=1.0.0 <1.1.3	1.1.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for MongoDB/BI Connector Transition Readiness Report.
Review the reported fix. Update MongoDB/BI Connector Transition Readiness Report to 1.1.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Source referencemongodb.com

Upstream source description

The MongoSQL Transition Readiness Tool writes query text and user names read from BI Connector log files into its generated HTML report without encoding them for that output context. A user able to issue queries through the BI Connector can influence log content so that markup supplied in a query is interpreted by the browser when an operator later generates and opens the report, which may disclose other users' logged query text and user names to an external party or present misleading content to the operator. Generating a report over logs containing the affected entries and opening that report in a browser is required.

Quoted source text, attributed separately from HOL analysis.