Cross-Site Scripting (XSS) in prestashop/prestashop (CVE-2026-33673)
Summary
Cross-site scripting in prestashop/prestashop (CVE-2026-33673). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 8.2.5 or later.
Original description
The description as published by the source.
Impact
Multiple stored Cross-Site Scripting (stored XSS) vulnerabilities in the BO: an attacker who can inject data into the database, via limited back-office access or a previously existing vulnerability, can exploit unprotected variables in back-office templates.
Patches
Patched on 8.2.5 and 9.1.0
Workarounds
None
References
None
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-2026-33673 has been found in prestashop/prestashop.
Successful exploitation can lead to full system takeover.
What to do: upgrade prestashop/prestashop to 8.2.5 or later.
If unsure, ask your IT team or search "prestashop/prestashop CVE-2026-33673" on the vendor's site.
CVE-2026-33673 (prestashop/prestashop) — CWE-79
Attack vector: remote (network-reachable)
Patched: 8.2.5 — 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 prestashop/prestashop.
Check the vendor advisory for the affected versions of prestashop/prestashop.
Severity: ?. Successful exploitation can lead to full system takeover.
Update to 8.2.5.
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 'prestashop/prestashop' . 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
-
1Identify exposure identify
grep -r 'prestashop/prestashop' . | 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
prestashop/prestashop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 prestashop/prestashop to 8.2.5ステージング環境で 8.2.5 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
- web github.com
- web github.com
- web github.com