CVE-2026-19454 json
JetBackup 3.1.18.8 - 3.1.23.3 - Admin+ Multisite Network Backup Download
published 2026-08-27 2 mo ago modified 2026-08-28 2 mo ago also EUVD-2026-66875
- cvss
- 4.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 26%
- public exploits
- 0
- none known
Summary
The JetBackup WordPress plugin before 3.1.23.5 does not perform its multisite authorisation check before serving backup archives and job logs, allowing an administrator of the network's main site who is not a Super Admin to download a full backup of the entire network, including every site's data and the shared webroot.
Patch / fix
- Unknown JetBackup 3.1.23.5
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/1f5480c1-260a-40ce-9938-112746f9e8e8/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N |
| CNA | 3.1 | 4.4 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N |
Affected products
- Unknown JetBackup
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
- Technology feeds
References
-
wpscan.com
/vulnerability/1f5480c1-260a-40ce-9938-112746f9e8e8/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-19454
- NVD CVE-2026-19454
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.