Security readout for executives and security teams
Plain-English summary
WonderCMS 2.4.0 reportedly allowed a crafted SVG upload to store JavaScript that could run in another user’s browser. The business risk is session theft, content tampering, or account misuse if an affected site lets attackers upload files viewed by staff or users.
Executive priority
Treat this as a targeted remediation item for any WonderCMS 2.4.0 site, especially public-facing or multi-user deployments. Prioritize inventory and vendor-guidance checks before broader emergency response.
Technical view
The CVE describes stored XSS in WonderCMS 2.4.0 within uploadFileAction(), tied to accepting SVG as image/svg+xml. A crafted SVG could execute script when rendered by an unsuspecting browser. Sources do not provide CVSS, CWE, CPEs, authentication requirements, patch version, or confirmed exploitation.
Likely exposure
Exposure is most likely on WonderCMS 2.4.0 installations with file upload functionality reachable by untrusted or compromised users. The source bundle does not identify affected CPEs or other versions.
Exploitation context
The source describes exploitation through a crafted SVG file. CISA KEV is false, and the bundle provides no cited evidence of active exploitation in the wild.
Researcher notes
Evidence is limited to the CVE description and GitHub references. The key uncertainty is whether upload access requires authentication and which release fixed the issue. Avoid assuming exploitability beyond crafted SVG upload and browser-side script execution.
Mitigation direction
- Inventory WonderCMS sites and identify any running version 2.4.0.
- Check current WonderCMS vendor guidance for fixed versions or configuration mitigations.
- Restrict SVG uploads where business use does not require them.
- Limit file upload access to trusted authenticated users only.
- Review uploaded SVG files and remove untrusted content from affected sites.
Validation and detection
- Confirm the deployed WonderCMS version for each public and internal site.
- Review upload handling for SVG acceptance as image/svg+xml.
- Check whether untrusted users can upload files.
- Review web content stores for unexpected SVG uploads.
- Inspect access logs for suspicious SVG upload activity.
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.
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 lookupCVE-2018-1000062 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/robiso/wondercms/issues/56CVE reference · x_refsource_CONFIRM
- https://github.com/robiso/wondercms/blob/ea640a02b4b8d88835d2e01600d24b23176fb665/index.php#L737CVE reference · x_refsource_CONFIRM
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.