Security readout for executives and security teams
Plain-English summary
CVE-2016-10215 is a cross-site scripting issue in Fastspot BigTree bigtree-form-builder before 1.2. If a vulnerable site accepts crafted POST data to the form builder redraw endpoint, attacker-supplied HTML or script could run in a visitor's browser under that site's trust context.
Executive priority
Treat this as a targeted remediation item for any legacy BigTree deployments. It is not KEV-listed in the provided data, but XSS in a CMS extension can support account compromise or site trust abuse if administrators are exposed.
Technical view
The CVE describes insufficient filtering of multiple HTTP POST parameters sent to site/index.php/../../extensions/com.fastspot.form-builder/ajax/redraw-field.php. The result is arbitrary HTML and script execution in the browser context of the vulnerable website. Public sources do not provide CVSS, CWE, authentication requirements, or exploit telemetry.
Likely exposure
Exposure is likely limited to websites running Fastspot BigTree with bigtree-form-builder versions before 1.2 and the vulnerable extension endpoint reachable. The source bundle does not identify specific CPEs, hosting patterns, or default install prevalence.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation. The vulnerability is web-facing XSS, so impact depends on who can reach the endpoint and whether privileged users interact with affected pages.
Researcher notes
Key missing data includes CVSS, CWE classification, affected CPEs, authentication context, and exploit maturity. The strongest technical evidence is the CVE description and linked Fastspot commit. Avoid assuming broader BigTree core exposure beyond the named form-builder extension.
Mitigation direction
- Upgrade bigtree-form-builder to version 1.2 or later.
- Verify the referenced GitHub fix is present in deployed code.
- Restrict access to form-builder administrative or AJAX endpoints where feasible.
- Review Fastspot or BigTree guidance for any additional supported remediation.
Validation and detection
- Inventory BigTree sites and installed bigtree-form-builder versions.
- Check whether versions earlier than 1.2 remain deployed.
- Confirm the redraw-field.php endpoint is not publicly reachable unnecessarily.
- Review web logs for suspicious POST activity to the affected endpoint.
- Validate input filtering behavior in a non-production environment.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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.
CVE-2016-10215 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Fastspot/bigtree-form-builder/commit/06fde0cc67ff121b212715031e12574f50970fcdCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.