CVE Intelligence
High Injection exploit reference

CVE-2023-2017 — Improper Control of Generation of Code in Twig Rendered Views in Shopware

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.

Published Apr 17, 2023 · Updated Oct 24, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP, GitHub Security Advisories · CNA: STAR_Labs

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.
How the score was calculated
  • EPSS 2.1% (30-day exploitation probability)+12
  • Technical severity (high)+6
  • CISA SSVC: exploitation "poc"+5

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation
Not confirmed
Not in CISA KEV — an absence of record, not proof it is unexploited.
EPSS FIRST
2.07%
ahead of 81% of scored CVEs · Oct 29, 2026
Affects
Shopware
Shopware and 3 more
CVSS base
8.8
High · 4 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation
Proof of concept
none · proof-of-concept · active
Automatable
No
can an attacker script the kill-chain steps
Technical impact
Total
partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

  • Documented mitigation — starlabs.sg (NIST National Vulnerability Database)
  • Composer Shopware/platform: fixed in version 6.4.20.1 — github.com (GitHub Security Advisories)
  • Composer Shopware/core: fixed in version 6.4.20.1 — github.com (GitHub Security Advisories)

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

  1. Identify exposed assets running the affected vendor/product/version combinations (Shopware Shopware, Shopware Shopware 6, Composer Shopware/core…).
  2. Apply the fixed version or the patch documented under Remediation.
  3. Search available logs for exploit probes matching the vulnerability class (injection), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Shopware Shopware ≥ 6.1.0 and ≤ 6.4.20.0version 6.5.0.0-rc1version 6.5.0.0-rc2version 6.5.0.0-rc3 Vulnerable NIST National Vulnerability Database
Shopware Shopware 6 ≤ 6.4.20.0≥ 6.5.0.0-rc1 and ≤ 6.5.0.0-rc4 Vulnerable CVE Program (cve.org) e CISA ADP
Composer Shopware/core ≤ 6.4.20.0 Vulnerable GitHub Security Advisories
Composer Shopware/platform ≤ 6.4.20.0 Vulnerable GitHub Security Advisories

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactScored by
8.8 CVSS 3.1 High 2.8 5.9 info@starlabs.sg via NIST National Vulnerability Database
8.8 CVSS 3.1 High 2.8 5.9 nvd@nist.gov via NIST National Vulnerability Database
8.8 CVSS 3.1 High — — GitHub, Inc. via GitHub Security Advisories
8.8 CVSS 3.1 High — — STAR_Labs via CVE Program (cve.org) e CISA ADP
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-94 · Code Injection

Other CVEs with this weakness →

EPSS over time FIRST

Oct 23, 2026 → Oct 29, 2026 · 7 reading(s) · max 2.07%

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

  • Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
  • Look for parameters with command/query metacharacters and unexpected child processes of the service.
web/proxy/WAF logsnetwork IDS/IPSapplication logsendpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

  • 2026
  • Fix documented
    Oct 24, 2026 · GitHub Security Advisories
  • Affected products added · composer/shopware/platform, composer/shopware/core
    Oct 24, 2026 · GitHub Security Advisories
  • Affected products added · shopware ag/shopware 6
    Oct 24, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 24, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 24, 2026
  • Fix documented
    Oct 24, 2026 · NIST National Vulnerability Database
  • Affected products added · shopware/shopware
    Oct 24, 2026 · NIST National Vulnerability Database
  • CVSS changed · 8.8
    Oct 24, 2026 · NIST National Vulnerability Database
  • Source status changed · → Modified
    Oct 24, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 24, 2026 · Alertas do Telegram
  • 2023
  • CVE published
    Apr 17, 2023 · STAR_Labs

Source activity

Repeated readings are counted rather than listed.

  • 2× References added · Oct 24, 2026 – Oct 24, 2026
  • 1× Official description updated · Oct 24, 2026 – Oct 24, 2026

References

8 on the record

Elsewhere on this site

Shopware
every CVE for this vendor
Injection
same class
CWE-94
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-104937 CVE-2026-104937 16d
  • CVE-2026-48013 Shopware: SSRF in Media External-Link Endpoint Bypasses IP Validation Jul 23, 2026
  • CVE-2026-48012 Shopware SSO referer trust leading to an arbitrary redirect target Jul 23, 2026
  • CVE-2026-48014 Shopware: Admin API ACL Bypass in Order State Transition Endpoints Jul 17, 2026
  • CVE-2026-48010 Shopware: Privilege escalation: non-admin user with user:create ACL can create admin accounts Jul 17, 2026
  • CVE-2026-48016 Shopware: Unauthorized Payment Trigger for Foreign Orders via /store-api/handle-payment Jul 17, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2023-2017 is "Improper Control of Generation of Code in Twig Rendered Views in Shopware", rated High. It affects Shopware (Shopware); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 8.8 describes technical severity. EPSS 2.07% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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