CVE-2022-3342Network attack vector

Object injection via ignored nonce failures

Published Oct 20, 2023 · Updated Apr 8, 2026

PHAR deserialization in Automattic Jetpack CRM 5.3.1 and earlier allows remote attackers to inject PHP objects through the CSV importer. The zeroBSCRM_CSVImporterLitehtml_app function continues after failed nonce checks in steps 2 and 3, then passes the attacker-controlled zbscrmcsvimpf value to file_exists, which invokes PHAR deserialization for a phar:// path. Exploitation requires an uploaded PHAR archive and administrator interaction, and injected objects enter the WordPress PHP execution stream.

CVSS severity7.5
High
EPSS probability0.97%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHAR deserialization in Automattic Jetpack CRM 5.3.1 and earlier allows remote attackers to inject PHP objects through the CSV importer. The zeroBSCRM_CSVImporterLitehtml_app function continues after failed nonce checks in steps 2 and 3, then passes the attacker-controlled zbscrmcsvimpf value to file_exists, which invokes PHAR deserialization for a phar:// path. Exploitation requires an uploaded PHAR archive and administrator interaction, and injected objects enter the WordPress PHP execution stream.

The record

CVE
CVE-2022-3342
Published
Oct 20, 2023
Updated
Apr 8, 2026
Vendor
Automattic
Product
Jetpack CRM
Classifications
CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 20, 2023CVE 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 <=5.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Automattic · Jetpack CRMversion=0 <=5.3.1

Published CVSS scores

8.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5WordfenceCVSS:3.1/AV:N/AC:H/PR:N/UI:R/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.

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

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 exploitUnconfirmed

Weakness, pattern, technique

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

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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