CVE-2026-19454Network attack vectorHinoki check available

Administrator-level network backup disclosure via deferred authorization check

Published Aug 27, 2026 · Updated Aug 27, 2026

Incorrect authorization in JetBackup for WordPress before 3.1.23.5 allows remote authenticated users to download network-wide backups. The archive and job-log download handlers serve files before running the WordPress Multisite Super Admin authorization check. Exploitation requires a multisite deployment and administrator access to the network's main site, exposing every site's data and the shared webroot.

CVSS severity4.4
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect authorization in JetBackup for WordPress before 3.1.23.5 allows remote authenticated users to download network-wide backups. The archive and job-log download handlers serve files before running the WordPress Multisite Super Admin authorization check. Exploitation requires a multisite deployment and administrator access to the network's main site, exposing every site's data and the shared webroot.

The record

CVE
CVE-2026-19454
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
JetApps
Product
JetBackup for WordPress
Classifications
CWE-863, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.1.18.8 <3.1.23.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

JetApps · JetBackup for WordPressversion=3.1.18.8 <3.1.23.5

Published CVSS scores

4.4CISA-ADPCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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