Security readout for executives and security teams
Plain-English summary
JPress v4.2.0 has a reported command execution flaw in its admin add-on installation path. If abused, it could let an attacker run commands on the server. The supplied sources do not confirm active exploitation, CVSS severity, prerequisites, or a named fix.
Executive priority
Treat this as high priority where JPress v4.2.0 is in use because command execution can affect confidentiality, integrity, and availability. Priority is lower if JPress is not deployed or admin functions are strongly isolated.
Technical view
CVE-2021-45807 concerns command execution through io.jpress.web.admin._AddonController::doUploadAndInstall in JPress v4.2.0. The bundle provides a CVE description and GitHub references, but no CWE, CVSS vector, authentication requirement, root cause detail, or confirmed remediation version.
Likely exposure
Exposure appears limited to organizations running JPress v4.2.0, especially where administrative add-on upload and installation functionality is reachable. The supplied evidence does not define affected CPEs or confirm whether authentication is required.
Exploitation context
CISA KEV status is false in the source bundle, and no cited source confirms active exploitation. Public GitHub references exist, but the supplied evidence is too sparse to assess exploit maturity or real-world use.
Researcher notes
The public record supplied is minimal. Avoid assuming unauthenticated reachability, exploit availability, or a patched version without additional vendor evidence. Focus validation on version presence, access controls around doUploadAndInstall, and vendor issue tracking.
Mitigation direction
- Check JPress vendor guidance and issue 167 for an official fixed release or workaround.
- Restrict access to JPress administrative interfaces to trusted networks and users.
- Disable or tightly control add-on upload and installation where operationally feasible.
- Review administrator accounts and remove unnecessary privileged access.
- Monitor for unexpected add-on uploads, installations, or server-side process activity.
Validation and detection
- Inventory JPress deployments and identify any running v4.2.0.
- Confirm whether administrative add-on installation is exposed beyond trusted operators.
- Review application and server logs for unusual add-on installation activity.
- Verify whether vendor guidance identifies a fixed version or configuration workaround.
- Document compensating controls if a patch is unavailable or cannot be applied.
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-2021-45807 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.
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
- https://github.com/JPressProjects/jpressCVE reference, mitre
- https://github.com/JPressProjects/jpress/issues/167CVE reference, mitre
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.