Privilege escalation in Jetbackup

CVE-2026-19453

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.

Vulnerability class: Privilege Escalation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (8.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-19453: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

  • Jetbackup

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-19453?
CVE-2026-19453 is a high-severity vulnerability in Jetbackup, classified under Improper Privilege Management. CVSS score: 7.1/10. Published 2026-09-02.
How severe is CVE-2026-19453?
High severity. CVSS v3 base score is 7.1 out of 10.