Security readout for executives and security teams
Plain-English summary
A low-privilege WordPress user could abuse WPvivid Backup, Migration & Staging to upload ZIP files where the plugin failed to enforce proper capability checks. Because backup and migration plugins often handle sensitive site data, compromise could affect confidentiality, integrity, and availability.
Executive priority
Treat this as a high-priority WordPress plugin exposure, especially on sites with customer accounts or open registration. Prioritize inventory, upgrade, and account review before broader hardening work.
Technical view
CVE-2020-36842 is a CWE-434 arbitrary file upload in WPvivid through version 0.9.35. The reported issue is missing capability checks on the wpvivid_upload_import_files and wpvivid_upload_files AJAX actions, allowing authenticated Subscriber+ users to upload ZIP files that can later be extracted.
Likely exposure
Exposure is limited to WordPress sites running WPvivid Backup, Migration & Staging versions up to and including 0.9.35. Risk is higher where untrusted users can register or hold Subscriber-level accounts.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation is not anonymous; it requires an authenticated low-privilege WordPress account, but the CVSS vector rates the attack as network-accessible and low complexity.
Researcher notes
The available evidence identifies the vulnerable AJAX actions, privilege level, file type, and affected version ceiling. The bundle does not provide confirmed exploitation, complete patch notes, or detailed post-upload impact, so validation should stay evidence-led.
Mitigation direction
- Inventory WordPress sites for WPvivid Backup, Migration & Staging.
- Confirm whether installed versions are 0.9.35 or earlier.
- Update to a vendor-supported release newer than 0.9.35 where available.
- Disable or remove the plugin if timely update is not possible.
- Restrict untrusted user registration and review Subscriber-level accounts.
- Check vendor guidance before relying on compensating controls.
Validation and detection
- Verify plugin version from WordPress admin or asset inventory.
- Review whether public user registration is enabled on affected sites.
- Check logs for unusual WPvivid AJAX activity by low-privilege accounts.
- Review upload and backup directories for unexpected ZIP or extracted files.
- Confirm updated plugin behavior enforces appropriate capability checks.
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.
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-2020-36842 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
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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.
CVSS vector scores
1 official scoreWe 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:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/de1da248-2e03-40fa-8997-7176dc06abc9?source=cveCVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2261665%40wpvivid-backuprestore%2Ftrunk&old=2252870%40wpvivid-backuprestore%2Ftrunk&sfp_email=&sfph_mail=CVE reference
- https://www.webarxsecurity.com/vulnerability-in-wpvivid-backup-plugin-can-lead-to-database-leak/?fbclid=IwAR3Ve74ZIvmx-aC0OssIWYwcWEjGq6yU16DcyVGHD1XUT3uYaZ3QyVu_Eos&utm_content=buffer4435b&utm_medium=social&utm_source=facebook.com&utm_campaign=bufferCVE reference
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.