CVE-2025-26763Network attack vector

Editor-level PHP object injection

Published Feb 22, 2025 · Updated Apr 28, 2026

PHP object injection in MetaSlider Slideshow 3.94.0 and earlier allows remote authenticated users to inject PHP objects. Published advisories do not identify the input, code path, or deserialization call that accepts attacker-controlled data. Editor-level access is required, and a POP chain in another plugin or theme determines whether the injected object deletes files, exposes sensitive data, or executes code.

CVSS severity9.8
Critical
EPSS probability0.64%
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 MetaSlider Slideshow 3.94.0 and earlier allows remote authenticated users to inject PHP objects. Published advisories do not identify the input, code path, or deserialization call that accepts attacker-controlled data. Editor-level access is required, and a POP chain in another plugin or theme determines whether the injected object deletes files, exposes sensitive data, or executes code.

The record

CVE
CVE-2025-26763
Published
Feb 22, 2025
Updated
Apr 28, 2026
Vendor
MetaSlider
Product
MetaSlider Slideshow
Classifications
CWE-502
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=3.94.0 changes=[{"at":"3.95.0","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MetaSlider · MetaSlider Slideshowversion=0 <=3.94.0 changes=[{"at":"3.95.0","status":"unaffected"}]

Published CVSS scores

9.8PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data

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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