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CVE Record

CVE-2021-46116: jpress 4.2.0 is vulnerable to remote code execution via io.jpress.web.admin._TemplateController#doInstall.

jpress 4.2.0 is vulnerable to remote code execution via io.jpress.web.admin._TemplateController#doInstall. The admin panel provides a function through which attackers can install templates and inject some malicious code.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2021-46116 describes remote code execution in JPress 4.2.0 through the admin template installation feature. An attacker able to use that admin function could install a template containing malicious code. The public record does not provide a CVSS score, patch version, or evidence of active exploitation.

Executive priority

Prioritize any JPress 4.2.0 system that is internet-facing, business-critical, or has broadly accessible admin login. Remote code execution can lead to server takeover, but urgency should be balanced against the missing CVSS, patch, and exploitation evidence.

Technical view

The reported sink is io.jpress.web.admin._TemplateController#doInstall. The vulnerable behavior is template installation accepting injected code via the admin panel, resulting in remote code execution. The source bundle names JPress 4.2.0 but provides no CPEs, CWE, CVSS vector, exploit prerequisites beyond admin-panel function access, or fixed release details.

Likely exposure

Exposure is most likely in organizations running JPress 4.2.0 with the admin panel reachable and template installation enabled. Risk increases if admin credentials are weak, reused, or compromised. The bundle does not identify other affected versions.

Exploitation context

The CVE states attackers can use an admin panel template-install function to inject malicious code. KEV is false, and the provided sources do not show confirmed active exploitation. Public issue details may help researchers assess behavior, but the bundle does not establish weaponized exploitation in the wild.

Researcher notes

The record is sparse: no CVSS, CWE, CPE, affected-version range, or fixed release is provided. Analysis should stay anchored to JPress 4.2.0 and the named _TemplateController#doInstall path. Do not assume unauthenticated reachability unless confirmed by testing or vendor documentation.

Mitigation direction

  • Check JPress vendor guidance and issue 168 for fixed-version information.
  • Restrict admin panel access to trusted networks and authenticated administrators.
  • Disable or tightly control template installation where operationally possible.
  • Review administrator accounts for compromise, reuse, or unnecessary privileges.
  • Monitor JPress application files and logs for unexpected template changes.

Validation and detection

  • Inventory internet-facing and internal JPress deployments and identify version 4.2.0.
  • Confirm whether admin template installation is accessible in each deployment.
  • Review recent template installations and file changes for unauthorized modifications.
  • Check admin access logs for unusual sessions, source IPs, or failed login patterns.
  • Document whether vendor remediation exists before accepting residual risk.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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description · low confidence lookup

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.

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cve · low confidence lookup

CVE-2021-46116 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
1ADP providers
3Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

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ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.