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CVE Record

CVE-2021-37711: Authenticated server-side request forgery in file upload via URL.

Versions prior to 6.4.3.1 contain an authenticated server-side request forgery vulnerability in file upload via URL. Version 6.4.3.1 contains a patch. As workarounds for older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin.

HighCVSS 8.8Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Shopware Platform versions up to 6.4.3.0 have an authenticated server-side request forgery issue in file upload by URL. A logged-in user could cause the server to make unintended requests, potentially exposing data or affecting systems reachable from the Shopware server.

Executive priority

Prioritize remediation for any active Shopware 6 deployment. This is a high-severity authenticated SSRF with vendor patch availability, so delayed patching leaves internal services and sensitive server-side data at unnecessary risk.

Technical view

CVE-2021-37711 is CWE-918 SSRF in Shopware Platform file upload via URL. It affects versions <= 6.4.3.0 and is patched in 6.4.3.1. CVSS 3.1 is 8.8 with network access, low attack complexity, low privileges, no user interaction, and high CIA impact.

Likely exposure

Exposure is most relevant to organizations running Shopware Platform 6.4.3.0 or earlier, especially where authenticated users can access file upload by URL functionality. The bundle lists Shopware Platform only and provides no affected CPEs.

Exploitation context

The source bundle does not show CISA KEV listing or any cited evidence of active exploitation. The vulnerability still warrants urgency because exploitation requires only authenticated low-privilege access and has high confidentiality, integrity, and availability impact in CVSS.

Researcher notes

Key indicators are Shopware Platform <= 6.4.3.0, file upload via URL, CWE-918, and CVSS vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Evidence is sufficient for affected scope and fixed version, but not for real-world exploitation.

Mitigation direction

  • Upgrade Shopware Platform to 6.4.3.1 or later.
  • For older 6.1, 6.2, or 6.3 deployments, review Shopware's plugin workaround guidance.
  • Limit who has authenticated access to file upload by URL features.
  • Check Shopware advisory guidance before relying on any compensating control.

Validation and detection

  • Inventory all Shopware Platform deployments and record exact versions.
  • Confirm no production instance remains on 6.4.3.0 or earlier without the vendor workaround.
  • Verify the Shopware security advisory applies to the installed product line.
  • Review application logs for suspicious authenticated file upload by URL activity.
Prepared
Confidence
high
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-918: Information exposure and cloud metadata lookup

Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-37711 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
8.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2021-37711Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
shopwareplatform<= 6.4.3.0Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-918 · source CWE mapping

Server-Side Request Forgery (SSRF)

Server-Side Request Forgery (SSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.