CVE-2020-36669Network attack vector

Arbitrary file upload via missing import nonce

Published Mar 7, 2023 · Updated Apr 8, 2026

CSRF in JetBackup for WordPress 1.3.9 and earlier allows remote attackers to upload arbitrary files through a forged import request. The backup_guard_get_import_backup() handler accepts the import operation without validating a WordPress nonce, so a cross-origin request reaches its upload logic. Exploitation requires a logged-in site administrator to follow attacker-controlled content, after which the uploaded file can alter server content.

CVSS severity8.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in JetBackup for WordPress 1.3.9 and earlier allows remote attackers to upload arbitrary files through a forged import request. The backup_guard_get_import_backup() handler accepts the import operation without validating a WordPress nonce, so a cross-origin request reaches its upload logic. Exploitation requires a logged-in site administrator to follow attacker-controlled content, after which the uploaded file can alter server content.

The record

CVE
CVE-2020-36669
Published
Mar 7, 2023
Updated
Apr 8, 2026
Vendor
JetBackup
Product
JetBackup for WordPress
Classifications
CWE-352, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=1.3.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JetBackup · JetBackup for WordPressversion=0 <=1.3.9

Published CVSS scores

8.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1190Exploit Public-Facing Application

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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