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CVE-2023-3977 - Backup Backup Plugin

CVE-2023-3977

Several plugins for WordPress by Inisev are vulnerable to Cross-Site Request Forgery to unauthorized installation of plugins due to a missing nonce check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for unauthenticated attackers to install plugins from the limited list via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVE-2023-3977

MEDIUM CVSS 4.3 Published 2023-07-28 Updated 2025-04-03
AI Risk Moderate (44/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P4 Planned
Severity Band MEDIUM
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Affected Components 17
Reference Links 10
AI Risk Engine Moderate (44/100)
Exploitability Low
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2023-07-28 CVE published and first recorded in the threat feed.
  2. 2025-04-03 Record updated with latest vulnerability metadata.
  3. 2026-04-09 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 6 days ago

AI enriched 6 days ago (2026-04-09 06:40 UTC)

Technical Summary

Several plugins for WordPress by Inisev are vulnerable to Cross-Site Request Forgery to unauthorized installation of plugins due to a missing nonce check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for unauthenticated attackers to install plugins from the limited list via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Potential Impact

Severity is MEDIUM (CVSS 4.3). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Low based on low-bar exploit prerequisites.

Primary risk drivers: low-bar exploit prerequisites

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Backup Backup PLUGIN · backup-backup Affected range not specified Fixed version not specified
Backup Migration PLUGIN · backup-migration Affected: < 1.2.8 Fixed in: 1.2.8
Changeset PLUGIN · changeset Affected range not specified Fixed version not specified
Clone PLUGIN · clone Affected: < 2.3.8 Fixed in: 2.3.8
Copy Delete Posts PLUGIN · copy-delete-posts Affected range not specified Fixed version not specified
Duplicate Post PLUGIN · duplicate-post Affected: < 1.4.0 Fixed in: 1.4.0
Enhanced Text Widget PLUGIN · enhanced-text-widget Affected: < 1.5.8 Fixed in: 1.5.8
Feedburner Alternative And Rss Redirect PLUGIN · feedburner-alternative-and-rss-redirect Affected range not specified Fixed version not specified
Http Https Remover PLUGIN · http-https-remover Affected range not specified Fixed version not specified
Pop Up PLUGIN · pop-up Affected: < 1.2.0 Fixed in: 1.2.0
Redirection PLUGIN · redirection Affected: < 1.1.4 Fixed in: 1.1.4
Rss Redirect Feedburner Alternative PLUGIN · rss-redirect-feedburner-alternative Affected: < 3.8 Fixed in: 3.8
Social Media Share Buttons Social Sharing Icons PLUGIN · social-media-share-buttons-social-sharing-icons Affected: < 3.5.8 Fixed in: 3.5.8
Ssl Mixed Content Fix PLUGIN · ssl-mixed-content-fix Affected: < 3.2.4 Fixed in: 3.2.4
Ultimate Posts Widget PLUGIN · ultimate-posts-widget Affected: < 2.2.5 Fixed in: 2.2.5
Ultimate Social Media Icons PLUGIN · ultimate-social-media-icons Affected range not specified Fixed version not specified
Ultimate Social Media Plus PLUGIN · ultimate-social-media-plus Affected range not specified Fixed version not specified

References

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