CVE-2023-0958

CVE-2023-0958 is a medium-severity vulnerability in Backupbliss Backup Migration with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

• Severity: Medium (CVSS 3.x base score 4.3)
• EPSS exploit prediction: 1% (42nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-862
• Affected product: Backupbliss Backup Migration
• Published: 2023-07-28
• Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2023-0958?

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.

How severe is CVE-2023-0958?

CVE-2023-0958 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-0958 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0958?

CVE-2023-0958 primarily affects Backupbliss Backup Migration. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-0958?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-0958 published?

CVE-2023-0958 was published on 2023-07-28 and last updated on 2026-06-17.

References

• https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.2.7/includes/banner/misc.php#L427
• https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.2.8/includes/banner/misc.php#L434
• https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.3.8/banner/misc.php#L426
• https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.4.0/banner/misc.php#L434
• https://plugins.trac.wordpress.org/browser/enhanced-text-widget/tags/1.5.6/banner/misc.php#L339
• https://plugins.trac.wordpress.org/browser/enhanced-text-widget/tags/1.5.7/banner/misc.php#L351
• https://plugins.trac.wordpress.org/browser/feedburner-alternative-and-rss-redirect/tags/3.7/modules/banner/misc.php#L427
• https://plugins.trac.wordpress.org/browser/http-https-remover/tags/3.2.3/banner/misc.php#L427
• https://plugins.trac.wordpress.org/browser/pop-up-pop-up/tags/1.1.9/modules/banner/misc.php#L427
• https://plugins.trac.wordpress.org/browser/pop-up-pop-up/tags/1.2.0/modules/banner/misc.php#L432
• https://plugins.trac.wordpress.org/browser/redirect-redirection/tags/1.1.3/includes/banner/misc.php#L427
• https://plugins.trac.wordpress.org/browser/ultimate-posts-widget/tags/2.2.4/banner/misc.php#L343
• https://plugins.trac.wordpress.org/browser/ultimate-posts-widget/tags/2.2.5/banner/misc.php#L351
• https://plugins.trac.wordpress.org/browser/ultimate-social-media-icons/tags/2.8.0/banner/misc.php#L424
• https://plugins.trac.wordpress.org/browser/ultimate-social-media-icons/tags/2.8.2/banner/misc.php#L434
• https://plugins.trac.wordpress.org/browser/ultimate-social-media-plus/tags/3.5.7/banner/misc.php#L424
• https://plugins.trac.wordpress.org/browser/wp-clone-by-wp-academy/tags/2.3.7/modules/banner/misc.php#L438
• https://plugins.trac.wordpress.org/browser/wp-clone-by-wp-academy/tags/2.3.8/modules/banner/misc.php#L432
• https://plugins.trac.wordpress.org/changeset/2944041/ultimate-social-media-plus/tags/3.5.8/banner/misc.php?old=2823720&old_path=ultimate-social-media-plus%2Ftags%2F3.5.7%2Fbanner%2Fmisc.php
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fcopy-delete-posts%2Ftags%2F1.3.8&old=2923021&new_path=%2Fcopy-delete-posts%2Ftags%2F1.3.9&new=2923021&sfp_email=&sfph_mail=
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2823769%40http-https-remover%2Ftags%2F3.2.3&new=2944114%40http-https-remover%2Ftags%2F3.2.4
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2823770%40feedburner-alternative-and-rss-redirect%2Ftags%2F3.7&new=2944116%40feedburner-alternative-and-rss-redirect%2Ftags%2F3.8#file115
• https://www.wordfence.com/threat-intel/vulnerabilities/id/cf7bdd0e-f3b3-4be5-8a30-2c6d9cb783a3?source=cve

Affected products (11)

• cpe:2.3:a:backupbliss:backup_migration:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:backupbliss:clone:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:copy-delete-posts:duplicate_post:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:inisev:enhanced_text_widget:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:inisev:redirection:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:inisev:rss_redirect_\&_feedburner_alternative:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:inisev:ssl_mixed_content_fix:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:inisev:ultimate_posts_widget:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:mypopups:pop-up:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:socialshare:social_share_icons_\&_social_share_buttons:*:*:*:*:*:wordpress:*:*
• cpe:2.3:a:ultimatelysocial:social_media_share_buttons_\&_social_sharing_icons:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Backupbliss Backup Migration

• CVE-2023-6972 — Critical (CVSS 9.8): The Backup Migration plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.3.9…
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• CVE-2023-6971 — High (CVSS 8.1): The Backup Migration plugin for WordPress is vulnerable to Remote File Inclusion in versions 1.0.8 to 1.3.9 via the…
• CVE-2023-6266 — High (CVSS 7.5): The Backup Migration plugin for WordPress is vulnerable to unauthorized access of data due to insufficient path and…
• CVE-2023-6271 — High (CVSS 7.5): The Backup Migration WordPress plugin before 1.3.6 stores in-progress backups information in easy to find,…
• CVE-2023-7002 — High (CVSS 7.2): The Backup Migration plugin for WordPress is vulnerable to OS Command Injection in all versions up to, and including,…

All CVEs affecting Backupbliss Backup Migration →

Other CWE-862 (Missing Authorization) vulnerabilities

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• CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
• CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
• CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
• CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →