Categories
CVE-2026-81525 high CVSS 8.1

Vulnerability in mongodb/mongodb (CVE-2026-81525)

Summary

Vulnerability in mongodb/mongodb (CVE-2026-81525). Confidential information can be exposed externally. Mitigation: upgrade to 2.4.1 or later.

Original description

The description as published by the source.

Impact

Passing untrusted input as part of a database or collection name may result in targeting a different database or collection than specified.

Patches

Fixed in PHP library 1.21.4 and 2.4.1.

Workarounds

Validate database and collection names prior to passing into APIs.

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-2026-81525 has been found in mongodb/mongodb.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: upgrade mongodb/mongodb to 2.4.1 or later.
If unsure, ask your IT team or search "mongodb/mongodb CVE-2026-81525" on the vendor's site.

CVE-2026-81525 (mongodb/mongodb) — CWE-943 / CVSS v3 8.1
Attack vector: remote (network-reachable) / no user interaction
Patched: 2.4.1 — apply immediately
Workaround: Validate database and collection names prior to passing into APIs.
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.

❓ What is the problem

A vulnerability (CWE-943) exists in mongodb/mongodb.

📍 Affected scope

Check the vendor advisory for the affected versions of mongodb/mongodb.

🔥 Severity

Severity: High (CVSS 8.1/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 2.4.1.

🛡️ Workaround

Workaround: Validate database and collection names prior to passing into APIs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'mongodb/mongodb' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify
    grep -r 'mongodb/mongodb' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で mongodb/mongodb を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply temporary workaround mitigate
    Validate database and collection names prior to passing into APIs.

    パッチが適用されるまでの応急処置として、Validate database and collection names prior to passing into APIs. を実施。回避策の副作用 (機能低下) を確認した上で。

  3. 3
    Apply patch patch
    Upgrade mongodb/mongodb to 2.4.1

    ステージング環境で 2.4.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  4. 4
    Post-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。

Affected packages

composer mongodb/mongodb
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.1"}]}]
Packagist mongodb/mongodb
[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.4.1"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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