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CVE-2026-108661 medium CVSS 6.5

Vulnerability in JeecgBoot (CVE-2026-108661)

Summary

Vulnerability in JeecgBoot (CVE-2026-108661). Data can be tampered with by attackers. Exploitable via POST /sys/tenant/changeOwenUserTenant..

Original description

The description as published by the source.

JeecgBoot through 3.9.5 contains a missing authorization vulnerability that allows any authenticated user to transfer tenant ownership via POST /sys/tenant/changeOwenUserTenant. Low-privileged attackers can supply userId and tenantId parameters to reassign any tenant's owner to a member, including themselves, and strip the legitimate owner.

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-2026-108661 has been found in JeecgBoot.
Attackers can target a specific entry point like POST /sys/tenant/changeOwenUserTenant. over the network to misuse the product.
Data can be tampered with by attackers. CVSS score: 6.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "JeecgBoot CVE-2026-108661" on the vendor's site.

CVE-2026-108661 (JeecgBoot) — CWE-862 / CVSS v3 6.5
Attack vector: remote (network-reachable) / no user interaction
Attack surface: POST /sys/tenant/changeOwenUserTenant.
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-862) exists in JeecgBoot. Attackers reach the vulnerable code path via POST /sys/tenant/changeOwenUserTenant..

📍 Affected scope

Check the vendor advisory for the affected versions of JeecgBoot. Attack surface: POST /sys/tenant/changeOwenUserTenant..

🔥 Severity

Severity: Medium (CVSS 6.5/10). Data can be tampered with by attackers.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual POST /sys/tenant/changeOwenUserTenant. requests with malformed payloads or SQL meta-characters. Run grep -r 'JeecgBoot' . 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 'JeecgBoot' . | 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 JeecgBoot 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
    Hunt for indicators of compromise detect 
    grep 'POST /sys/tenant/changeOwenUserTenant.' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'

    アクセスログで POST /sys/tenant/changeOwenUserTenant. への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。

  3. 3
    Post-deployment verification verify 
    Replay attack against POST /sys/tenant/changeOwenUserTenant. on staging to confirm patch closes the vector

    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 Step 2 と同じログクエリでアラート再発が無いか継続監視。

References

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