CVE-2023-51326Public exploitNetwork attack vector

Email flooding via unthrottled password resets

Published Feb 20, 2025 · Updated Nov 4, 2025

Missing rate limiting in PHPJabbers Cleaning Business Software 1.0 allows remote attackers to flood a legitimate user's mailbox. The Forgot Password handler accepts repeated requests for the same account and generates an email for each request without throttling submissions. No authentication or user interaction is required, and the resulting message volume can interrupt the recipient's email service.

CVSS severity6.5
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing rate limiting in PHPJabbers Cleaning Business Software 1.0 allows remote attackers to flood a legitimate user's mailbox. The Forgot Password handler accepts repeated requests for the same account and generates an email for each request without throttling submissions. No authentication or user interaction is required, and the resulting message volume can interrupt the recipient's email service.

The record

CVE
CVE-2023-51326
Published
Feb 20, 2025
Updated
Nov 4, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-290, T1499.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1499.003Application Exhaustion Flood

Public exploit references

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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