Cross-Site Scripting (XSS) in pimcore/pimcore (CVE-2021-39166)
Summary
Cross-site scripting in pimcore/pimcore (CVE-2021-39166). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 10.1.2 or later.
Original description
The description as published by the source.
Pimcore is an open source data & experience management platform. Prior to version 10.1.2, text-values were not properly escaped before printed in the version preview. This allowed XSS by authenticated users with access to the resources. This issue is patched in Pimcore version 10.1.2.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
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-2021-39166 has been found in pimcore/pimcore.
Risk of unauthorized operations or information disclosure.
What to do: upgrade pimcore/pimcore to 10.1.2 or later.
If unsure, ask your IT team or search "pimcore/pimcore CVE-2021-39166" on the vendor's site.
CVE-2021-39166 (pimcore/pimcore) — CWE-79
Attack vector: remote (network-reachable)
Patched: 10.1.2 — apply immediately
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 pimcore/pimcore.
Check the vendor advisory for the affected versions of pimcore/pimcore.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 10.1.2.
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. Run grep -r 'pimcore/pimcore' . 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
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1Identify exposure identify
grep -r 'pimcore/pimcore' . | 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
pimcore/pimcoreを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade pimcore/pimcore to 10.1.2ステージング環境で 10.1.2 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。
-
3Post-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
References
- advisory nvd.nist.gov
- package github.com
- patch github.com
- patch github.com