CVE-2022-3357Public exploitNetwork attack vector

Authenticated gadget-chain execution via imported object deserialization

Published Oct 31, 2022 · Updated May 6, 2025

PHP object injection in Nextendweb Smart Slider 3 before 3.5.1.11 allows remote authenticated users to trigger a gadget chain via slider import. The WordPress slider-import handler unserializes the imported archive's data file, instantiating attacker-selected PHP objects without restricting allowed classes. Dashboard import access and a suitable gadget chain on the site are required; successful exploitation invokes that chain in the site's PHP context.

CVSS severity8.8
High
EPSS probability2.04%
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 Nextendweb Smart Slider 3 before 3.5.1.11 allows remote authenticated users to trigger a gadget chain via slider import. The WordPress slider-import handler unserializes the imported archive's data file, instantiating attacker-selected PHP objects without restricting allowed classes. Dashboard import access and a suitable gadget chain on the site are required; successful exploitation invokes that chain in the site's PHP context.

The record

CVE
CVE-2022-3357
Published
Oct 31, 2022
Updated
May 6, 2025
Vendor
Nextendweb
Product
Smart Slider 3
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 31, 2022CVE publishedPublication date reported by the CVE source.
  2. May 6, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.5.1.11 <3.5.1.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextendweb · Smart Slider 3version=3.5.1.11 <3.5.1.11

Published CVSS scores

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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.

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
Privilegesauthenticated
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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