CVE-2026-85530Network attack vectorHinoki check available

Unauthenticated account takeover via inconsistent email normalization

Published Sep 16, 2026 · Updated Sep 16, 2026

Improper email normalization in Nexcess GiveWP 4.16.6 through 4.16.8 allows remote attackers to take over donor-linked WordPress accounts. Donor email storage and subsequent donor lookup apply inconsistent normalization, so an attacker-supplied address can resolve to an arbitrary donor. No authentication is required, and a successful request can replace the password of any linked WordPress user, including an administrator.

CVSS severityUnavailable
Unscored
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper email normalization in Nexcess GiveWP 4.16.6 through 4.16.8 allows remote attackers to take over donor-linked WordPress accounts. Donor email storage and subsequent donor lookup apply inconsistent normalization, so an attacker-supplied address can resolve to an arbitrary donor. No authentication is required, and a successful request can replace the password of any linked WordPress user, including an administrator.

The record

CVE
CVE-2026-85530
Published
Sep 16, 2026
Updated
Sep 16, 2026
Vendor
Nexcess
Product
GiveWP
Classifications
T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=4.16.6 <4.16.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Nexcess · GiveWPversion=4.16.6 <4.16.8.1

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1098Account Manipulation

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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