Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated attacker upload a server-executable file through the editor’s asset manager by bypassing filename checks. If the editor is exposed on an ASP-capable site, compromise could mean full site takeover, data theft, or service disruption. Treat confirmed exposure as urgent until vendor guidance is checked.
Executive priority
High priority for any exposed deployment. Public exploit information and unauthenticated critical impact make this a rapid triage item, but business urgency depends on whether the editor and upload feature are actually present.
Technical view
CWE-434 unrestricted file upload in InnovaStudio WYSIWYG Editor 5.4. The supplied sources describe extension-filter bypass through filename manipulation, including null byte techniques and alternate extensions, enabling malicious ASP shell upload. CVSS 3.1 is 9.8 with network attack vector, low complexity, no privileges, and no user interaction.
Likely exposure
Likely limited to sites embedding InnovaStudio WYSIWYG Editor 5.4, especially where the asset manager upload path is internet-facing. The bundle has inconsistent affected-version metadata, so confirm product and version from deployed files or vendor records before scoping broadly.
Exploitation context
An ExploitDB reference is listed, indicating public exploit information exists. The bundle does not show CISA KEV listing or other cited evidence of active exploitation, so active exploitation should not be claimed from these sources alone.
Researcher notes
Do not overstate scope: the title and description name version 5.4, while the affected field lists version "0". No patch details are provided in the bundle. Focus validation on product presence, upload exposure, server-side execution risk, and vendor advisory status.
Mitigation direction
- Check vendor guidance for supported fixes or upgrade direction.
- Disable or remove the vulnerable asset manager upload feature where possible.
- Restrict access to editor upload endpoints to trusted administrators only.
- Block execution of uploaded files in writable directories.
- Review web server handling of ASP files in upload paths.
Validation and detection
- Inventory sites for InnovaStudio WYSIWYG Editor 5.4 deployments.
- Identify whether asset manager upload endpoints are externally reachable.
- Review upload directories for unexpected ASP or executable files.
- Check web logs for suspicious upload activity and filename anomalies.
- Confirm any fix or upgrade against vendor documentation.
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.
CWE-434: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile 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 lookupCVE-2023-53950 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
SSVC decision data
CVSS vector scores
2 official scoresWe 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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-51362CVE reference, VulnCheck · exploit
- Official Vendor HomepageCVE reference, VulnCheck · product
- VulnCheck Advisory: InnovaStudio WYSIWYG Editor 5.4 Unrestricted File Upload via Filename ManipulationCVE reference, VulnCheck · third-party-advisory
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.