CVE-2026-89064Network attack vectorHinoki check available

Unauthenticated credential overwrite via unverified Basic headers

Published Sep 17, 2026 · Updated Sep 18, 2026

Insufficient credential protection in All-in-One WP Migration and Backup 7.110 and earlier allows remote attackers to overwrite stored credentials. Ai1wm_Main_Controller::init() accepts Basic Authorization values on unauthenticated admin requests and stores them in ai1wm_auth_header as reversible base64 without verifying login, capability, nonce, or successful authentication. Anonymous requests can replace the option with attacker-chosen data, while legitimate integration credentials can be retained insecurely in the database.

CVSS severity5.3
Medium
EPSS probability0.50%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Insufficient credential protection in All-in-One WP Migration and Backup 7.110 and earlier allows remote attackers to overwrite stored credentials. Ai1wm_Main_Controller::init() accepts Basic Authorization values on unauthenticated admin requests and stores them in ai1wm_auth_header as reversible base64 without verifying login, capability, nonce, or successful authentication. Anonymous requests can replace the option with attacker-chosen data, while legitimate integration credentials can be retained insecurely in the database.

The record

CVE
CVE-2026-89064
Published
Sep 17, 2026
Updated
Sep 18, 2026
Vendor
ServMask
Product
All-in-One WP Migration and Backup
Classifications
CWE-522, T1556
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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 <=7.110

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ServMask · All-in-One WP Migration and Backupversion=0 <=7.110

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1556Modify Authentication Process

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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