CVE-2026-4853Network attack vector

Administrator directory deletion via upload path traversal

Published Apr 17, 2026 · Updated Apr 17, 2026

Path traversal in JetBackup for WordPress 3.1.19.8 and earlier allows remote authenticated users to delete directories via file upload. The handler passes a fileName sanitized only by sanitize_text_field() to Upload::getFileLocation(); failed-upload cleanup then passes dirname() of the traversed path to recursive Util::rm(). Administrator access and an invalid upload are required, and deletion of wp-content/plugins can disable every installed plugin.

CVSS severity4.9
Medium
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in JetBackup for WordPress 3.1.19.8 and earlier allows remote authenticated users to delete directories via file upload. The handler passes a fileName sanitized only by sanitize_text_field() to Upload::getFileLocation(); failed-upload cleanup then passes dirname() of the traversed path to recursive Util::rm(). Administrator access and an invalid upload are required, and deletion of wp-content/plugins can disable every installed plugin.

The record

CVE
CVE-2026-4853
Published
Apr 17, 2026
Updated
Apr 17, 2026
Vendor
JetApps
Product
JetBackup for WordPress
Classifications
CWE-22, T1485
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 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=0 <=3.1.19.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

JetApps · JetBackup for WordPressversion=0 <=3.1.19.8

Published CVSS scores

4.9WordfenceCVSS:3.1/AV:N/AC:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1485Data Destruction

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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