Cross-Site Scripting (XSS) in MongoDB Mongosql Transition Readiness Tool (CVE-2026-76798)
Summary
Cross-site scripting in MongoDB Mongosql Transition Readiness Tool (CVE-2026-76798). Confidential information can be exposed externally.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-76798 has been found in MongoDB Mongosql Transition Readiness Tool.
Confidential information can be exposed externally. CVSS score: 6.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "MongoDB Mongosql Transition Readiness Tool CVE-2026-76798" on the vendor's site.
CVE-2026-76798 (MongoDB Mongosql Transition Readiness Tool) — CWE-79 / CVSS v3 6.3
Attack vector: remote (network-reachable)
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in MongoDB Mongosql Transition Readiness Tool.
Check the vendor advisory for the affected versions of MongoDB Mongosql Transition Readiness Tool.
Severity: Medium (CVSS 6.3/10). Confidential information can be exposed externally.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで MongoDB Mongosql Transition Readiness Tool を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- patch cna@mongodb.com
- web nvd.nist.gov
- web mongodb.com
- web github.com