CVE-2024-6591Network attack vector

Unauthenticated arbitrary email sending via unchecked AJAX callbacks

Published Jul 27, 2024 · Updated Apr 8, 2026

Missing authorization in Ultimate WordPress Auction Plugin 4.2.7 and earlier allows remote attackers to send crafted emails to any address. The send_auction_email_callback and resend_auction_email_callback AJAX handlers accept attacker-supplied email content and recipients without a capability check. No authentication is required; abuse changes outgoing email content and can distribute attacker-chosen links through the site's mail service.

CVSS severity5.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Ultimate WordPress Auction Plugin 4.2.7 and earlier allows remote attackers to send crafted emails to any address. The send_auction_email_callback and resend_auction_email_callback AJAX handlers accept attacker-supplied email content and recipients without a capability check. No authentication is required; abuse changes outgoing email content and can distribute attacker-chosen links through the site's mail service.

The record

CVE
CVE-2024-6591
Published
Jul 27, 2024
Updated
Apr 8, 2026
Vendor
Inception Software LLP
Product
Ultimate WordPress Auction Plugin
Classifications
CWE-862, T1566.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2024CVE 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 <=4.2.6
  2. Affected versionversion=0 <=4.2.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Inception Software LLP · Ultimate WordPress Auction Pluginversion=0 <=4.2.6; version=0 <=4.2.7

Published CVSS scores

5.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1566.002Spearphishing Link

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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