Backup Backup - Broken Access Control (CVE-2023-0958)

Q: Am I affected by this vulnerability?

You are affected if your site runs Backup Backup. Versions below 2.8.2 are vulnerable; that release and later are not.

Q: How do I fix it?

Update Backup Backup to version 2.8.2 or later. That is the complete fix. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

Q: What can an attacker actually do?

This is a Broken Access Control flaw. An attacker who exploits it can reach actions or data that should have been restricted to someone else.

CVE-2023-0958

Vulnerability CVE-2023-0958 PLUGIN backup-backup MEDIUM

Several plugins for WordPress by Inisev are vulnerable to unauthorized installation of plugins due to a missing capability check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for authenticated attackers with minimal permissions, such as subscribers, to install select plugins from Inisev on vulnerable sites. CVE-2023-38514 appears to be a duplicate of this vulnerability.

CVE-2023-0958

MEDIUM CVSS 4.3 Published 2023-07-28 Updated 2026-06-17

AI Risk Moderate (38/100) 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:L/UI:N/S:U/C:N/I:L/A:N

Affected Components 16

Reference Links 10

AI Risk Engine Moderate (38/100)

Exploitability Low

Active Exploitation No strong signal

Published Exploit Status No public exploit references

Threat Timeline

2023-07-28 CVE published and first recorded in the threat feed.
2026-06-17 Record updated with latest vulnerability metadata.
2026-04-09 AI technical context refreshed for mitigation and impact guidance.
Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 166 days ago

AI enriched 166 days ago (2026-04-09 06:40 UTC)

Technical Summary

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 severity and technical exposure profile.

Primary risk drivers: severity and technical exposure profile

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

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 Share Icons Social Share Buttons PLUGIN · social-share-icons-social-share-buttons 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

What to do about this

Patch on your next cycle Worth fixing, but not ahead of other work.

Fix it

Update Backup Backup to 2.8.2 or later.

That is the complete fix. Everything below is what protects you in the meantime.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

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Am I affected by this vulnerability?