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CVE Record

CVE-2017-9441: Multiple cross-site scripting (XSS) vulnerabilities in BigTree CMS through 4.2.18 allow remote authenticate...

Multiple cross-site scripting (XSS) vulnerabilities in BigTree CMS through 4.2.18 allow remote authenticated users to inject arbitrary web script or HTML by uploading a crafted package, triggering mishandling of the (1) title or (2) version or (3) author_name parameter in manifest.json. This issue exists in core\admin\modules\developer\extensions\install\unpack.php and core\admin\modules\developer\packages\install\unpack.php. NOTE: the vendor states "You must implicitly trust any package or extension you install as they all have the ability to write PHP files.

LowCVSS 2.7Not KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2017-9441 is a low-severity stored XSS issue in BigTree CMS through 4.2.18. A highly privileged authenticated user could upload a crafted package whose manifest metadata injects script or HTML into the admin workflow. The business risk is mainly misuse of trusted admin package installation paths, not broad unauthenticated compromise.

Executive priority

Treat this as a low-priority governance and hardening item unless untrusted administrators or third-party packages are present. The main control is limiting who can install code-bearing CMS packages and ensuring only trusted packages are used.

Technical view

The CVE describes XSS in BigTree CMS package and extension unpack handlers: core/admin/modules/developer/extensions/install/unpack.php and core/admin/modules/developer/packages/install/unpack.php. The title, version, and author_name values in manifest.json are mishandled. CVSS 3.1 is 2.7: network reachable, low complexity, high privileges required, integrity impact only.

Likely exposure

Exposure appears limited to BigTree CMS deployments through 4.2.18 where authenticated users can install packages or extensions. The source bundle does not provide CPEs or a normalized affected product list beyond the CVE description.

Exploitation context

No KEV listing or cited source indicates active exploitation. The issue requires an authenticated, highly privileged user able to upload a crafted package. The vendor note says installed packages and extensions must be trusted because they can write PHP files.

Researcher notes

Evidence is narrow but consistent: CVE text and the linked GitHub issue identify stored XSS through manifest fields in package or extension unpack flows. No CWE, active exploitation evidence, CPE list, or explicit patch detail is included in the supplied sources.

Mitigation direction

  • Inventory BigTree CMS deployments and identify versions through 4.2.18.
  • Restrict package and extension installation to trusted administrators only.
  • Do not install packages or extensions from untrusted sources.
  • Check BigTree CMS guidance for fixed versions or official remediation.
  • Review admin trust boundaries around package upload workflows.

Validation and detection

  • Confirm whether any BigTree CMS deployment is at or below 4.2.18.
  • List users or roles allowed to install packages or extensions.
  • Review recent package and extension installs for untrusted sources.
  • Check whether manifest metadata is safely handled in install views.
  • Verify no unexpected admin-side script content is present.
Prepared
Confidence
medium
Sources
3

Public sources used

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

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CVE-2017-9441 mapping review

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Vulnerability profileCVE Program record
Severity
Low
CVSS
2.7 (3.1)
Known Exploited
No
Published

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

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
2Source 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
2.7CVSS 3.1LowCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N1.21.4Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

2.7Low
CVSS 3.1 vector shape for CVE-2017-9441Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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