Security readout for executives and security teams
Plain-English summary
CVE-2021-40238 affects Webuzo versions before 2.9.0. An unauthenticated attacker could place malicious content into admin-facing error logs by requesting a non-existent page. If an administrator views the Error Log page, that content may execute in the admin panel and could lead to remote code execution through Webuzo cron job functionality.
Executive priority
Prioritize remediation for any internet-facing or shared-hosting Webuzo deployment below 2.9.0. The business risk is elevated because an admin viewing routine logs could convert attacker-supplied content into control-panel code execution. Active exploitation is not confirmed in the supplied sources.
Technical view
The CVE describes an XSS issue in the Webuzo admin panel error-log workflow. The trigger is an HTTP request to a non-existent page, with execution occurring when an administrator views Error Log. The record states this can be leveraged to unauthenticated remote code execution via Cron Jobs. No CVSS, CWE, or KEV listing is provided.
Likely exposure
Exposure is likely limited to Webuzo deployments below 2.9.0, especially where the admin panel is reachable from untrusted networks. The CVE metadata does not provide CPEs or vendor/product normalization, so asset matching may require direct Webuzo version checks.
Exploitation context
The source bundle includes a public technical reference and a vendor release reference, but KEV is false and no cited source confirms active exploitation. The attack path appears to require an administrator viewing the Error Log page after attacker-controlled log content is created.
Researcher notes
The CVE record has sparse metadata: severity, CVSS, CWE, CPEs, and normalized affected product data are absent. The title and description identify Webuzo below 2.9.0 and the error-log-to-cron escalation path. Validate findings against vendor release notes and deployed version evidence.
Mitigation direction
- Upgrade Webuzo installations below 2.9.0 to 2.9.0 or later.
- Check Webuzo vendor guidance before choosing compensating controls.
- Restrict Webuzo admin panel access to trusted networks and administrators.
- Review Webuzo cron jobs for unauthorized or unexpected entries.
- Treat suspicious admin-log activity as possible compromise evidence.
Validation and detection
- Inventory all Webuzo instances and record exact versions.
- Confirm whether any instance is below Webuzo 2.9.0.
- Check whether Webuzo admin panels are internet-accessible.
- Review Error Log entries for suspicious non-existent page requests.
- Audit Cron Jobs for unknown tasks or unexpected command execution.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40238 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://gist.github.com/omriinbar/5a24ccc2127ac61b6d9872c9405ebc8eCVE reference · x_refsource_MISC
- https://www.webuzo.com/blog/webuzo-2-9-0-launched/CVE 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.