CVE-2023-2017

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 2.1% (80th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.1%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Server-side Template Injection (SSTI) in Shopware 6 (<= v6.4.20.0, v6.5.0.0-rc1 <= v6.5.0.0-rc4), affecting both shopware/core and shopware/platform GitHub repositories, allows remote attackers with access to a Twig environment without the Sandbox extension to bypass the validation checks in Shopware\Core\Framework\Adapter\Twig\SecurityExtension and call any arbitrary PHP function and thus execute arbitrary code/commands via usage of fully-qualified names, supplied as array of strings, when referencing callables. Users are advised to upgrade to v6.4.20.1 to resolve this issue. This is a bypass of CVE-2023-22731.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
2.1%
EPSS %ILE
80th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

April 17, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Aug 27, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic🟡 PoC Available

(CVE-2023-2017) Shopware 6 Server-side Template Injection (SSTI) via Twig Security Extension | STAR Labs

https://starlabs.sg/advisories/23/23-2017/
githubMentions a patch (unverified)

Improper Control of Generation of Code in Twig rendered views · Advisory · shopware/shopware · GitHub

https://github.com/shopware/platform/security/advisories/GHSA-7v2v-9rm4-7m8f

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFix by version rangeDependents
shopware/core6.3.0.0 ... v6.2.3 (72 versions)
  • every version up to 6.4.20.1: fixed in 6.4.20.1
—
shopware/platform6.3.0.0 ... v6.2.3 (72 versions)
  • every version up to 6.4.20.1: fixed in 6.4.20.1
—

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 184 total refreshes for this CVE.

  1. 2026-10-09 20:05 UTCEPSS rescore
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  3. 2026-10-07 23:45 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-2017?
CVE-2023-2017 is a high vulnerability published on April 17, 2023. Server-side Template Injection (SSTI) in Shopware 6 (<= v6.4.20.0, v6.5.0.0-rc1 <= v6.5.0.0-rc4), affecting both shopware/core and shopware/platform GitHub repositories, allows remote attackers with access to a Twig environment without the Sandbox extension to bypass the validation checks in…
When was CVE-2023-2017 disclosed?
CVE-2023-2017 was first published on April 17, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-2017 actively exploited?
CVE-2023-2017 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.1% probability of exploitation in the next 30 days (80th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-2017?
CVE-2023-2017 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2023-2017?
A fix for CVE-2023-2017 is available: update to the fixed version the vendor names in its advisory.

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