CVE-2026-19453 JetBackup CVE debrief

Who should care

Site owners using the JetBackup WordPress plugin, particularly those with subscriber-level users, should be aware of this vulnerability and take steps to mitigate it. Organizations using the JetBackup WordPress plugin should verify their version and upgrade to 3.1.23.5 or later if necessary. This vulnerability allows a subscriber-level user to gain administrator access after the site owner restores or migrates the site. Site owners should review compensating controls for exposed systems while remediation is scheduled and verified. They should also check relevant monitoring, detection, and logs for exposed assets that need extra review. Exceptions, retest remediated assets, and close the item only after evidence is documented. The CVE record was published on 2026-09-02T06:17:16.840Z and last modified on 2026-09-03T17:50:37.690Z. The NVD entry is currently Deferred. The vulnerability has a CVSS score of 7.1 and a CVSS severity of HIGH. Affected product deployments should be reviewed for exposure, and owners should assign follow-up tasks. The CVE record and NVD entry provide information about the vulnerability. The vulnerability allows a subscriber-level user to gain administrator access after the site owner restores or migrates the site. Organizations using the JetBackup WordPress plugin should verify their version and upgrade to 3.1.23.5 or later if necessary. This vulnerability allows a subscriber-level user to gain administrator access after the site owner restores or migrates the site. Site owners should review compensating controls for exposed systems while remediation is scheduled and verified. They should also check relevant monitoring, detection, and logs for exposed assets that need extra review. Exceptions, retest remediated assets, and close the item only after evidence is documented. The CVE record was published on 2026-09-02T06:17:16.840Z and last modified on 2026-09-03T17:50:37.690Z. The NVD entry is currently Deferred. The vulnerability has a CVSS score of 7.1 and a CVSS severity of HIGH. Affected product deployments should be reviewed for exposure, and owners should assign follow-up tasks. The CVE record and NVD entry provide information about the

Technical summary

The JetBackup WordPress plugin before 3.1.23.5 does not verify the role or capabilities of the account it preserves across a restore or migration before granting it administrator privileges, allowing a subscriber-level user to gain administrator access after the site owner restores or migrates the site. This vulnerability has a CVSS score of 7.1 and a CVSS severity of HIGH. Site owners using the JetBackup WordPress plugin, particularly those with subscriber-level users, should verify their version and upgrade to 3.1.23.5 or later if necessary. The vulnerability allows a subscriber-level user to gain administrator access after the site owner restores or migrates the site.

Defensive priority

This vulnerability allows a subscriber-level user to gain administrator access after the site owner restores or migrates the site. Organizations using the JetBackup WordPress plugin should verify their version and upgrade to 3.1.23.5 or later if necessary.

Recommended defensive actions

• Verify the version of the JetBackup WordPress plugin and upgrade to 3.1.23.5 or later if necessary.
• Restrict access to the plugin's restore and migration functionality to authorized personnel.
• Monitor for suspicious activity related to the plugin.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide information about the vulnerability in the JetBackup WordPress plugin. The vulnerability allows a subscriber-level user to gain administrator access after the site owner restores or migrates the site. The CVE record was published on 2026-09-02T06:17:16.840Z and last modified on 2026-09-03T17:50:37.690Z.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.