CVE-2026-2599Public exploitNetwork attack vector

Unauthenticated object injection via CSV export deserialization

Published Mar 5, 2026 · Updated Mar 5, 2026

PHP object injection in CRM Perks Contact Form Entries 1.4.7 and earlier allows remote attackers to inject objects through CSV export. The download_csv function passes stored, attacker-controlled form-field values to maybe_unserialize during export, permitting PHP class instantiation. Exploitation requires an unauthenticated form submission, a later CSV export, and a usable POP chain from another installed plugin or theme; consequences depend on that chain and include file deletion, data disclosure, or code execution.

CVSS severity9.8
Critical
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in CRM Perks Contact Form Entries 1.4.7 and earlier allows remote attackers to inject objects through CSV export. The download_csv function passes stored, attacker-controlled form-field values to maybe_unserialize during export, permitting PHP class instantiation. Exploitation requires an unauthenticated form submission, a later CSV export, and a usable POP chain from another installed plugin or theme; consequences depend on that chain and include file deletion, data disclosure, or code execution.

The record

CVE
CVE-2026-2599
Published
Mar 5, 2026
Updated
Mar 5, 2026
Vendor
CRM Perks
Product
Contact Form Entries
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 5, 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=* <=1.4.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CRM Perks · Contact Form Entriesversion=* <=1.4.7

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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